Free online file compression - local and private

Compress any file to fit any upload limit.

FileSizeFix shrinks PDFs, photos, videos and Office documents to the exact size a form accepts - free, in your browser, with no upload. The iPhone, iPad and Android apps add privacy cleanup, Smart Fix and editing.

Use the free web tools App StoreGet the iPhone & iPad app Google PlayGet the Android app

Selected files and their contents are processed on your device and are not uploaded to a server for processing.

1Choose a platform
2Select a file
3Review and prepare
4Export the checked copy

Free browser tools

Solve a file-size problem without installing an app

Choose a focused tool to compress or convert supported files locally in your browser. The selected files and their contents are not uploaded to a processing server.

All toolsMake Any File Fit Your Form

Drag in images, PDFs, Office documents, audio or video, choose the form's maximum file size, and FileSizeFix prepares each file locally in your browser.

ImagesCompress Image

Use Compress Image online. Your file stays on your device and is prepared for forms, applications and document portals.

PDFCompress PDF

Use Compress PDF online. Your PDF stays on your device and is optimized locally for upload limits.

Video & audioCompress Video

Use Compress Video online. Your video stays on your device and is converted locally in your browser with MP4, WebM, audio and animation presets.

OfficeCompress Any File

Use Compress Any File online. Your file stays on your device and is optimized locally for upload limits.

Try it now

Compress an image to your target size

Choose an image and a target size in KB to create a smaller upload-ready copy locally in your browser.

Server memory used: 0 MB

Choose JPG, PNG, HEIC, AVIF, WEBP, BMP, ICO, GIF or SVG

Target size in KBWidth px optionalHeight px optionalDPI (optional)Resize mode

Compress image

Private: one or many images stay on your device. The server receives no file.

Guides

Guides: make any file fit

Real upload limits, honest numbers and step-by-step fixes - written by the team that builds the tools. Every guide links straight to a free tool that solves the problem in your browser.

Email & MessagingEmail attachment size limits, explained

Current attachment limits for Gmail, Outlook, iCloud, Yahoo and company mail servers - plus why a 24 MB file still bounces and how to shrink it.

PDF & DocumentsWhy your PDF is huge - and how to shrink it

What actually makes PDFs huge - scans, images, fonts - and how to shrink a PDF to 1 MB or less without wrecking readability or signatures.

Video & AudioSending large videos without the quality massacre

Size limits for sending video via WhatsApp, Telegram, Discord, Signal, iMessage and email - what each platform does to your clip and how to keep quality.

All guides

Choose your platform

Native privacy tools or quick browser processing

Use the mobile apps for guided anonymization and editing, or open a focused web tool when you only need to compress or convert a file.

FileSizeFix for iPhone & iPad

Review face, visible-text and license-plate candidates, clean supported metadata and GPS, use Smart Fix, edit media, and annotate or sign PDFs and scans.

View on the App Store

FileSizeFix for Android

Anonymize reviewed candidates, clean supported metadata, use Smart Fix for upload-ready sizes and formats, and edit or sign PDFs and scans locally. Android bundles text-candidate detection for Latin, Chinese, Devanagari, Japanese and Korean scripts; other scripts can be missed.

Get it on Google Play

Free FileSizeFix web tools

Compress supported PDFs and Office files, or compress and convert supported images, videos and other formats locally in your browser, with no selected-file upload for processing.

Open the web tools

Privacy workflow

Review, clean and finish before export

The native apps combine visual anonymization, metadata control and upload preparation in one reviewable workflow.

License plates

Review plate candidates in photos and videos

A dedicated scan proposes possible license plates without automatically selecting or covering them.

Inspect every proposed plate before applying an effect
Choose pixelation, blur or a black cover
Preview video tracks before exporting the result

Faces & visible text

Cover only what you choose

Privacy Cleaner suggests face and visible-text regions in photos and videos. You review the candidates and decide what to cover.

Pixelate, blur or cover selected regions in black
Use an eye bar or emoji for selected faces
Add manual photo regions and review sampled video tracks

Metadata & GPS

Control information hidden inside files

View, edit or remove supported metadata fields and location information before sharing a file.

Inspect supported EXIF and GPS information
Edit or remove supported fields
Continue directly to compression or conversion

Smart Fix

Turn upload rules into a prepared file

Smart Fix reads maximum size, required format and pixel dimensions from a screenshot or photo, then prepares matching supported files on your device.

Target KB, MB, format and pixel requirements
Compress supported PDFs and Office documents
Compress or convert supported images, video and audio

Detection results are suggestions, not a guarantee of complete recognition. Small, blurred, moving or briefly visible content can be missed, so always review the preview before export.

Questions

FileSizeFix privacy and platform FAQ

Are my selected files uploaded for processing?

No. Selected files and their contents are processed on the device in the native apps or locally in the browser and are not uploaded to a server for file processing.

Does FileSizeFix find every face, text region or license plate?

No. Detection creates candidates for your review and can miss content. Android bundles candidate detection for Latin, Chinese, Devanagari, Japanese and Korean scripts; other scripts and small or blurred content can be missed. Always check the preview before sharing.

What is the difference between the apps and web tools?

The native apps include Privacy Cleaner, plate review, supported metadata controls, Smart Fix and editing such as PDF annotation and signing. The free web tools focus on local browser compression and conversion.

Can every file reach an exact size target?

Not always. File content and format limit how far it can be reduced safely. FileSizeFix shows the result so you can verify size, quality and readability before using it.

Start with FileSizeFix

Protect the details. Meet the limit. Share the checked copy.

Use the native app for privacy cleanup and editing, or open a free web tool for local compression and conversion.

App StoreGet the iPhone & iPad app Google PlayGet the Android app Start with a free web tool