Image Compressor
Compress, resize, and convert images instantly — JPEG, PNG, WebP. Everything runs in your browser. Nothing is ever uploaded.
No upload · 100% PrivateYou can also paste an image with Ctrl+V
Free Image Compressor — Compress, Resize, and Convert Images Online
This tool lets you compress, resize, and convert images — JPEG, PNG, and WebP — directly in your browser. No files are uploaded to any server; everything runs on your device using the browser's built-in Canvas API. Reduce file size with the quality slider, change pixel dimensions with the resize panel, and convert between formats in one step. Download the result with one click.
How to use
1. Click Choose image, drag and drop a file onto the upload area, or paste an image with Ctrl+V. 2. The tool compresses automatically at 80% quality. Original and output sizes appear side by side with a percentage saved. 3. To resize, turn on the Resize toggle. Enter a new width or height in pixels — the other dimension updates automatically when aspect ratio lock is on — or drag the Scale slider to set any percentage. Click Reset to original to go back to the original dimensions. 4. In Export / Compress, choose your output format: JPEG for photos, PNG to keep transparency, or WebP for the smallest web-ready files. Adjust the Quality slider for JPEG or WebP (PNG is always lossless). 5. Click Download to save the file with the correct name and extension.
Example
A 4.2 MB smartphone photo compresses to around 320 KB at 80% JPEG quality — a 92% reduction — with no visible difference at normal viewing sizes. Switching to WebP at the same quality often produces an even smaller file. To prepare a banner for a website, enable Resize, set the width to 1200 px (height adjusts automatically), keep format as JPEG at 80%, and download. The result is web-ready in seconds, with no software to install.
Tips
80% JPEG quality is a reliable starting point for most photos. For flat-colour images — logos, screenshots, illustrations — try WebP or lower the quality to 60–70%. PNG preserves transparency and is lossless, but can produce larger files than JPEG or WebP for photographs. When resizing, keep aspect ratio lock on to avoid distortion. Files over 20 MB may take a moment to process on older phones.