Image Compressor
Shrink photos and graphics in your browser — format-specific tools for JPG, PNG, WebP, HEIC, and AVIF.
Choose a file or drag and drop
Drop an image to compress or
Choose file · Drag & drop · Public file link
- Processed on your device
- No conversion file stored on our servers
- Maximum file size: 100 MB
No server upload — files are compressed in your browser.
Image Compressor by format
Re-encode JPEG photos at a chosen quality for a smaller file.
Compress PNG graphics — saves as WebP for strong size reduction (transparency kept in lossless-friendly settings).
Re-encode WebP images with a quality slider for tighter files.
Compress iPhone HEIC photos into a smaller JPG for sharing and uploads.
Re-encode AVIF stills or convert heavy AVIFs to efficient WebP/JPG-friendly delivery.
How to use this tool
Pick a format tool
Open a format-specific page below (for example JPG Compressor) when you know the extension, or use the general image compressor on this page.
Add your file
Drop a file up to 100 MB. Compression stays in this tab — no third-party conversion queue.
Download the smaller file
Tune quality, then save the result locally when the size looks right.
Frequently Asked Questions
More on quality loss: conversion quality guides · compression guides
Is the image compressor free?
Yes. Format Convertly compresses files in your browser with no signup or watermark.
Do you upload my files?
No. Compression runs on your device. There is no server copy of your files.
Why are there format-specific pages?
Each tool accepts the right extensions and sets a sensible output — for example JPG Compressor and PNG Compressor.
Does compressing or converting images reduce quality?
Lossy compression can. Use higher quality settings when fidelity matters, and keep an original master. Lossless workflows preserve pixels.
Can you recover quality after compressing?
Not from the compressed file alone. Keep the original upload/export and recompress from that master if you need a better result.
What is generational loss?
Quality damage from repeatedly re-encoding lossy images. Avoid save→compress→save loops; work from a master.
How does image compression work?
Tools decode pixels and re-encode (JPG/WebP and similar). See How image compression works and How to reduce image size without losing quality.
Lossy or lossless for my photo?
Photos usually use lossy JPG/WebP for web size; UI and screenshots prefer lossless PNG. Read Lossy vs lossless compression.
Where can I learn more about compression?
Browse Format Convertly’s Compression guides — what compression is, lossy vs lossless, image/video/audio how-tos, bitrate, and PDF size tips — each links back to the matching compressor.
Ready to convert more formats?
Browse converters or jump back to the tool above.