Let Compress
Free browser-based tools for compression, conversion, editing, and everyday file work.
Image
13Compress PNG
Reduce PNG file size up to 80% while maintaining quality. Fast, secure, and free.
Compress JPG
Compress JPG/JPEG images without losing quality. Reduce file size instantly.
Compress WebP
Optimize WebP images for better performance. Reduce WebP file size efficiently.
Compress AVIF
Compress AVIF images for next-gen web performance. Reduce file size efficiently.
Compress Image
Universal image compression tool supporting PNG, JPG, JPEG, WebP, AVIF, GIF, BMP, TIFF, HEIC and more formats.
Compress Image to Target Size
Compress JPG, PNG, WebP and more to a specific target size like 50KB, 100KB, 200KB or custom values in your browser.
Document
6Compress PDF
Reduce PDF file size by up to 90% while preserving quality. Free online PDF compressor - no upload, 100% private, works in browser.
Compress PDF to Target Size
Compress PDF files to a target size like 100KB, 200KB, 500KB, 1MB or custom values directly in your browser.
JPG to PDF
Convert JPG and JPEG images into a single PDF directly in your browser. Reorder photos, choose page settings, and keep everything on your device.
Image to PDF
Convert JPG, PNG, WebP, GIF, and BMP images into a PDF in your browser. Merge multiple images into one PDF without uploading files.
Compress DOCX
Compress DOCX files online in your browser. Reduce Word document size by optimizing embedded images without uploading your files.
Compress PPTX
Reduce PPTX file size by optimizing embedded images and media. Free browser-based PowerPoint compressor.
Media
10Compress MP3
Reduce MP3 file size by up to 80% while maintaining audio quality. Free online MP3 compressor - 100% browser-based, no upload required.
Compress MP4
Reduce MP4 video file size by up to 80% while maintaining video quality. Free online video compressor - 100% browser-based, no upload required.
Compress Video by Size Limit
Compress videos to platform size limits like 8MB, 10MB, 25MB, 50MB or custom targets in your browser.
Compress WebM
Reduce WebM file size by up to 80% while maintaining video quality. Free online WebM compressor - 100% browser-based, no upload required.
Compress MOV
Reduce MOV file size by up to 80% while maintaining video quality. Free online MOV compressor - 100% browser-based, no upload required.
Compress WAV
Reduce WAV file size by up to 90% while maintaining audio quality. Free online WAV compressor - 100% browser-based, no upload required.
Text
8Compress JSON
Minify and compress JSON data by up to 70%. Remove whitespace and optimize for APIs. Free online JSON minifier.
JSON Formatter
Format and beautify JSON in your browser. Pretty-print JSON with adjustable indentation, copy the output, and download the cleaned result.
JSON Validator
Validate JSON in your browser and see line and column errors when parsing fails. When valid, review a formatted JSON preview instantly.
Compress JavaScript
Minify and compress JavaScript code by 30-60%. Remove whitespace, comments, and optimize for production. Free online JS minifier.
Compress CSS
Minify CSS online in your browser. Remove whitespace and comments to create smaller production-ready stylesheets.
Compress HTML
Minify and compress HTML code. Remove whitespace, comments, and optimize for production. Free online HTML compressor.
Archive
16Compress to ZIP
Create ZIP archives from multiple files. Free online ZIP creator - 100% browser-based, no upload required, privacy protected.
Extract ZIP
Extract and unzip ZIP archives in your browser. View contents and download individual files. Free online ZIP extractor.
Compress GZIP
Compress files to GZIP format in your browser. Fast, lightweight compression for single files.
Decompress GZIP
Decompress GZIP files in your browser. Extract .gz files instantly and download the original content.
Compress BZ2
Compress files to BZ2 format in your browser. High compression ratio with WebAssembly-powered processing.
Decompress BZ2
Decompress BZ2 files in your browser. Extract .bz2 files instantly with WebAssembly-powered processing.
Other
12HEIC to JPG
Convert iPhone HEIC photos to JPG format instantly. Fast, free, and secure.
Image Format Converter
Convert images between any format. Support PNG, JPG, WebP, AVIF, GIF and more.
Crop Image
Crop images to custom size or aspect ratio. Perfect for social media and websites.
Resize Image
Resize images by pixels, percentage or ratio. Maintain quality while changing size.
Rotate & Flip Image
Rotate and flip images online. 90°, 180°, 270° rotation and horizontal/vertical flip.
Add Watermark
Add text or image watermark to protect your image copyright. Full control over watermark style and position.
Everything You Need to Optimise Your Files
100% Browser-Based
All processing happens in your browser itself. Your files never leave your device — no uploads whatsoever, zero risk.
Batch Processing
Compress, convert, or resize multiple files in one go. Save time by processing everything together.
All Popular Formats
Works with PNG, JPG, WebP, AVIF, PDF, GIF, SVG, HEIC, BMP, TIFF and more.
Smart Compression
Advanced algorithms reduce file sizes by up to 90% whilst keeping quality intact. You have full control.
Frequently Asked Questions
Is Let Compress completely free to use?
Absolutely! Every tool is completely free — no registration, no hidden charges, no file limits, and no watermarks. You may use any tool as many times as you like.
Are my files safe and private?
Hundred percent safe. All processing happens in your browser itself. Your files are never uploaded to any server, so your data remains completely private at all times.
What file formats are supported?
We support major formats across images, PDFs, media, archives, and text workflows. Please check the individual tool page for exact input and output support.
How much can I reduce my file size by?
It varies depending on the content, but most files can be reduced by 30–90%. Our smart algorithms ensure the quality remains excellent whilst significantly reducing file size.
Do I need to install any software?
Not at all! Let Compress works directly in your browser on any device — desktop, tablet, or mobile. Simply open the tool and start using it right away.