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为安全而生，为所有人打造。
客户端渲染

生成安全的文件预览链接

通过拖放或 API 保护你的文件和用户的文件——安全、简单、对开发者友好。

PDF
Excel
Images
Video
Audio
Archive
Code
3D
上传文件API Docs

生成安全预览链接（默认 1 小时有效）。可配置 TTL、水印、禁止下载、一次性访问、查看追踪等。保护你的应用和客户附件文件。

轻松预览，守护您的文件

选择任意文件，配置访问策略，即可获得可自定义有效期的预览链接。

点击或拖拽文件到此处

支持任意文件类型

时长
1 hour

Why Choose PreviewFile.dev?

Built for developers who need secure, scalable file preview capabilities with flexible access control

110+ File Formats

Native browser preview for PDFs, Office documents, spreadsheets, images, videos, code files, archives, diagrams, and more—all rendered client-side for maximum security and performance.

See full list of supported file formats
  • PDF with PDF.js viewer
  • Excel/CSV with x-spreadsheet engine
  • Images (including TIFF), videos, audio

Comprehensive Security

Protect your files with password protection, dynamic watermarks, download prevention, one-time links, and configurable expiration—keeping sensitive files secure at every step.

  • Password protection & one-time links
  • CloudFront CDN + Signed URLs
  • Dynamic watermarks & download prevention

API-first for Developers

Integrate secure file preview with simple REST or tRPC APIs. Upload files programmatically and get instant preview URLs with full TypeScript support.

  • Upload returns instant preview URL
  • OpenAPI documentation with code examples
  • Full TypeScript support & type-safety

Built for Scale

Elastic architecture with CDN acceleration, serving from startups to enterprises with high-volume preview needs. Client-side rendering ensures zero server load.

  • Client-side rendering (zero server load)
  • CloudFront CDN with layered caching
  • Multi-region deployment / private hosting available

See It In Action

Real-world examples of how PreviewFile.dev protects and shares your files securely

Watermark Protection

Add dynamic custom watermarks to protect your content from unauthorized redistribution

Watermark Demo
CONFIDENTIAL
View Demo

Download Prevention

Allow secure viewing while preventing file downloads for sensitive documents

PDF
Download

This file type cannot be previewed directly in the browser.

Try It

Smart Embedding

Embed secure file previews in your app with a simple iframe—no plugins required

DOC
report.docx
<iframe src="/p/doc" />
Supports 110+ file formats: PDF, Office documents, Images, Videos, and more
See Code

Embed Any File, Anywhere

Embed secure file previews in your application with a simple iframe—works with any file format

Live Preview

Preview

简单透明的定价

从个人项目到企业部署，PreviewFile.dev 支持各个阶段。

Save save ~17% with yearly

Free

$0/month

非常适合尝试 PreviewFile 的基本功能

  • 1,000 次预览 / 月
  • 无限存储空间
  • 1 day 链接有效期
  • OpenAPI 访问
  • 基础支持
Get Started
Most Popular

Plus

$5/month

适合专业人士和成长中的团队

  • 10,000 次预览 / 月
  • 无限存储空间
  • 7 days 链接有效期
  • OpenAPI 访问
  • 优先支持

Enterprise

Custom PricingCustom solutions for large-scale organizations
  • 包含 Plus 版所有功能
  • 无限预览次数
  • 无限链接有效期
  • 专属客户经理
  • 自定义 SLA
  • 本地私有化部署选项
  • SSO/SAML 集成
  • 自定义合同
Contact Sales

Loved by Customers Worldwide

See what our users are saying about us

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

M
mrkelly
@kellypeilinchan

I’ve always hated making S3 objects public. It’s messy, hard to secure, and painful to manage. Now previewfile.dev, one line of code to handle secure file previews finally solves this. Plus it supports previewing hundreds of file types.

S
Seey
@seey_dev

PreviewFile lets me generate secure file previews with minimal code. Drag-and-drop or API—keeps things protected without building a viewer from scratch.

S
Shawn.Deng
@ShawnDeng0527

PreviewFile feels like a small but useful layer for secure file sharing — preview first, access later. Simple idea, makes sense for modern workflows.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.

D
Doris
@Hihi_Doris

One line of code to handle secure previews? That saves so much dev time. Building a secure viewer from scratch is a pain, so this API is a lifesaver. Congrats on the beta! 🚀

C
casperL
@casper_lzw

Stop building in-house file previews. previewfile.dev offers secure, private rendering with download protection built-in.

WC
William Chan
@william_3242

Love this idea. Secure client-side file preview is something a lot of teams underestimate until it hurts. The API integration + format coverage makes this feel very production-ready.