Compress Image Online — Reduce File Size Free

Quality slider, instant KB savings preview, download in seconds. Unlike TinyPNG — your file never leaves your browser.

🔒 Your file never leaves your browser

How do I compress an image without uploading it?
PaintDim's image compressor works entirely in your browser — your file is never sent to any server. Open any PNG, JPEG, or WebP, move the quality slider to balance size and clarity, preview the exact KB savings, and download the compressed result. Free, no signup, no watermark.

Feature	PaintDim	TinyPNG	iLoveIMG
Files stay on your device	✓ Always	✗ Uploads to server	✗ Uploads to server
No signup required	✓	✓	✓
Free to use	✓	Limited (20 files/month API)	Limited on free tier
No watermark	✓	✓	✓

Sources: TinyPNG and iLoveIMG upload files to their servers for processing. PaintDim uses the browser Canvas API.

🗜

Drop image here or click to browse

Supports PNG, JPEG, WebP · up to 50 MB

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Format: — · Original size: —

Output format

Quality — 82%

PNG is lossless — the quality slider has no effect. For real compression, switch to JPEG or WebP above.

Original —

→

Compressed —

Savings —

How it works

Upload

Drop your PNG, JPEG, or WebP image. Nothing is sent to any server.

Adjust quality

Move the slider to balance file size vs. visual quality, then hit Recalculate to see the exact savings.

Download

Click "Compress & Download". The smaller file saves to your device.

100% private — unlike TinyPNG or iLoveIMG

TinyPNG uploads your images to their servers. iLoveIMG does too. PaintDim compresses directly in your browser using the Canvas API. Your photos, screenshots, and documents never leave your device. Close the tab and everything is gone.

Need layers, filters, adjustments, and more?

→ Open Full Editor — it's free

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