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PXEL

Free, fast, and private image & PDF tools.
Process files locally — nothing is uploaded.

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  • Compress Image
  • Resize Image
  • PNG to JPG
  • Image to PDF
  • Remove Background
  • Passport Photo

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FAQ

  • Are files uploaded to cloud servers?

    Never. 100% of processing happens locally in your browser using Wasm.

  • How many operations can I run daily?

    Unlimited. Every PXEL tool is free to use as many times as you like.

  • Do I need an account to use PXEL?

    No sign-up, no login. Just open a tool and start — all features are free.

  • Is batch processing supported?

    Yes, batch operations are supported across all core image & PDF tools.

  • Which file formats are supported?

    JPG, PNG, WebP, GIF, AVIF, SVG, BMP, TIFF, and PDF documents.

© 2026 PXEL. Free to use. No sign-up required.

Compress Tools
REFERENCE
Compress File Formats — Complete Reference
Technical Reference

Compress File Formats — Complete Reference

A reference guide to all file formats supported by compress tools, including input, output, quality, and compatibility information.

Detailed Overview & Key Recommendations

When choosing between image or document formats, consider your end destination: web performance, print quality, email attachment limits, or form submission portals. PXEL processes all files client-side directly in your browser, so you can test and convert formats instantly with zero privacy risk.

Reduces page load times by serving smaller image files
Meets strict file-size limits on government, banking, and job application forms
Saves storage space on phones, drives, and cloud accounts
No quality settings to guess — the engine finds the optimal balance automatically

Recommended Online Tools

Explore Compress Category

Compress Image

Reduce image file size without losing quality.

5KB

Compress Image to 5KB

Compress any image to exactly 5KB or less.

10KB

Compress Image to 10KB

Compress any image to exactly 10KB or less.

20KB

Compress Image to 20KB

Compress any image to exactly 20KB or less.

Common Questions & Answers

What is the maximum file size I can compress?

The tool accepts files up to 50 MB.

Can I compress multiple images at once?

Batch compression is available on supported tools. Check the tool page for batch mode.

Will the compressed image look different?

At default settings the difference is imperceptible. You can adjust the quality target if needed.

Which output format gives the smallest file?

WebP generally produces the smallest files for web use. JPEG is the most universally compatible.

Does this work on mobile?

Yes. The tool runs in any modern mobile browser without installation.

Is there a limit on how many times I can use this?

No. The tool is free with unlimited use.