About this tool
This tool draws your image onto a browser canvas at the exact target size, centre-cropping to fill the frame the way YouTube itself crops, then encodes it at your chosen quality. Everything happens locally — no upload, no queue, no watermark — and you see the before/after file sizes so you know exactly what you saved.
Why it matters: YouTube rejects thumbnails over 2 MB and quietly downscales oversized ones, banners crop differently on TV, phones and desktop, and a 6 MB phone photo as a community-post image wastes your viewers' data. Right-sizing at the source keeps text sharp and uploads fast.
How to use it
- Choose your image.
- Pick a preset size (or Custom and type your own).
- Choose JPG for smallest files, PNG for crisp graphics.
- Set quality — 85% is the sweet spot — and download.
Tips from real creator workflows
- If the crop cuts something important, pre-crop loosely in your editor and resize here only for the final pixels.
- JPG at 82–88% is indistinguishable from PNG for photos and a fraction of the size.
- Keep a 2560×1440 master of your banner; export the smaller sizes from it, never the reverse.
Frequently asked questions
Does resizing reduce quality?
Downscaling is essentially lossless visually. Upscaling a small image to a big canvas cannot invent detail — start from the largest original you have.
Is my image uploaded?
No. The canvas work happens entirely in your browser.
What does the compressor change?
It re-encodes at your quality setting and strips the bulky metadata photos carry; the picture content is unchanged.
Related tools
Video Compressor
Compress a video right in your browser — smaller file, same watchable quality, nothing uploaded anywhere.
Video Trimmer & Clip Cutter
Cut the exact seconds you need out of any video — in your browser, frame-accurate, no upload, no watermark.
AI Image Generator
Generate images from a text prompt — thumbnail backgrounds, channel art, post visuals — four variations at once, free.