Free online file compressor
Make images, PDF, video and audio smaller in your browser. Choose your settings, compare the result and download.
How it works
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1
Drop
Add any file — nothing is uploaded
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2
Choose target
A size limit or just "smaller"
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3
Compress
Smart multi-round optimization
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4
Download
Plus next steps to keep going
−92%
One workbench, not 120 scattered tools
Every tool shares the same flow — set a target, compress, verify the result, then continue to the next step.
Exact size targets
Type the limit you need — 100KB for a form, 2MB for an email — and the workbench hits it, file by file.
Results you can verify
Every job ends with a report: before, after, reduction, and whether each file met its target.
A workflow, not dead ends
Finished compressing? The report suggests what to do next — resize, convert — so you stay in one place.
Every file type, one place
Images, PDFs, video, audio, archives and documents — all 120 tools under one consistent system.
Built around one job: hitting your size limit
Six flagship tools cover the whole workflow — from making files smaller to hitting an exact target size.
Common jobs we get files fit for
Pick your situation — the right workflow is one click away.
Email attachments
Fit PDFs and videos under attachment limits before you hit send.
Job applications
Portfolios and resumes under the strict 100KB limits of application portals.
Government & exam uploads
Meet official photo and document size requirements for forms and ID uploads.
Faster websites
Cut image weight and convert to modern formats for faster page loads.
Messaging apps
Share videos that fit WhatsApp, Discord and chat size caps.
Choose a file compressor that fits your file
Compression methods have different trade-offs. Start with the file type, then compare the downloaded size and quality.
Adjust image quality or dimensions. Lossy output can change fine detail; preview text and edges before using it.
This PDF compressor renders pages as JPEG images. Selectable text, links, forms and digital signatures are not preserved.
Re-encode with a lower bitrate or resolution. Check playback, sound and the final size; a strict target may need further adjustments.
Lower bitrate reduces size with a possible loss of detail. Re-encoding already compressed audio can also make it larger.
Bundle files without changing their contents. JPEG, MP4 and other compressed files may shrink very little in a ZIP.
There is no guaranteed saving or exact target for every file. If the result is larger, some tools return the original; compare its format and size before sharing.
Everyday File Tools, One Place
100% Browser-Based
All processing happens locally in your browser. Your files never leave your device, so you can compress files without uploading them.
Batch-Friendly Workflows
Handle multiple files at once for compression, conversion, resizing, and other repetitive tasks in one private workflow.
Broad Format Support
Work with popular image, document, media, text, and archive formats without bouncing between different sites or uploading files to multiple services.
Smart Processing
Reduce file size, convert formats, or clean up assets with practical controls that balance quality, compatibility, and privacy.
Frequently Asked Questions
Is Let Compress free to use?
The tools are free to use without registration. Supported formats and practical file limits vary with the tool, browser and available memory.
Are my files safe and private?
File processing takes place on your device rather than uploading files to our servers. Pages can load processing libraries, ads and analytics over the network; browser-based processing does not guarantee that every file or browser is safe.
What file formats are supported?
Support varies by tool, but Let Compress covers popular image formats, PDFs, media files, archives, and text-processing workflows. Check the specific tool page for exact input and output support.
How much can I reduce my file size?
Savings depend on the input, format and settings. Already compressed files may shrink very little or become larger. Compare the actual downloaded size and quality; a fixed percentage or exact target is not guaranteed.
Do I need to install any software?
No software installation is needed. Browser capabilities and device memory vary; large media files and unsupported codecs may require a different browser or a desktop application.