Image Compressor for JPG, PNG and WebP
Shrink the file size without changing the dimensions: choose a quality from 10 to 100% and an output format (auto, JPG, PNG or WebP).
Your photo is sent to the Pixelift server in Germany and compressed with the Sharp library. It is not passed to any AI provider. Without an account we don't save the result; when you're signed in, the original and the result are saved in your account history.
Free image compression
The Pixelift server compresses it with the Sharp library, without AI. Free, no account.
- Free no credits
- JPG, PNG, WebP output
- 10–100% quality
- Operational
- Free · Sharp
What is Compress Image?
Compress Image is a free tool in Pixelift that works online with no installation. Shrink the file size without changing the dimensions: choose a quality from 10 to 100% and an output format (auto, JPG, PNG or WebP). The Pixelift server compresses it with the Sharp library, without AI. Free, no account. Engine: Sharp. No credits are charged per result. Files go to our server in the EU; if the tool uses an AI model, it runs at a provider from our subprocessor list. We never train models on them.
What the compressor does
JPEG with mozjpeg
Photos are saved as progressive JPEG with the mozjpeg encoder at the quality you choose.
PNG with a palette
PNG gets a limited color palette and the highest compression level, so it can be lossy.
WebP
A modern format, usually smaller than JPEG at similar quality.
Compression on the Pixelift server
The file goes to the Pixelift server, where the Sharp library saves it again in the chosen format and quality. The dimensions stay the same, and no AI models are involved.
- JPEG: progressive, mozjpeg encoder
- PNG: color palette and compression level 9
- WebP: encoding at the highest effort (6)
Perfect for
Websites
Lighter photos load faster
Mobile apps
Less data to download
Attachments fit within limits
Cloud storage
More photos in the same space
Compression settings
Quality
From 10 to 100%, 80% by default
Auto
PNG with transparency stays PNG, WebP stays WebP, everything else is saved as JPEG
JPG
Best for photos
PNG
For graphics with transparency; here with a color palette
WebP
Usually the smallest file for the web
Supported formats
Input
JPG, PNG and WebP up to 20 MB
Output
Auto, JPG, PNG or WebP
Dimensions
Unchanged, the same pixels as the original
Cost
Free, no credits and no account
Result
Size before and after; if the file comes out bigger, the page tells you
Tips — Recommended
- Start at 80% quality and check the result with the before/after slider
- For photos on the web, choose WebP or JPG
- Keep PNG for graphics with transparency
- Compare the size before and after downloading
Keep in mind
- Lower quality means a smaller file but visible artifacts
- Already compressed files may not shrink, or may even grow
- Compression doesn't change dimensions; use resize for that
- Keep the original as a backup
What this tool is (and is not) for
Use this tool for
- •Website optimization (faster loading)
- •Email attachments (size limits)
- •Mobile uploads / apps
- •Save space in archives
- •Share via WhatsApp / Messenger
DO NOT use for — try instead
- •Change dimensions (px), not just file sizeTry instead: Resize Image— scale dimensions, not just compress
- •Only change the file format, without quality settingsTry instead: Format Converter— conversion between formats
- •Improve quality of low-resolution imageTry instead: Upscaler— AI upscale preserves detail
Frequently Asked Questions
Is the compressor free?
Yes. It uses no credits and works without an account; the only limit is on the number of operations in a short time.
How much smaller will the file get?
It depends on the photo, format and quality. The page shows the size before and after; when the file comes out bigger than the original, it says so.
Is PNG compression lossless?
No. Sharp saves PNG with a limited color palette, so photos can lose some colors.
Is my image uploaded to a server?
Yes, to the Pixelift server in Germany, where the Sharp library compresses it. It is not passed to any AI provider. Without an account we don't save the result; when you're signed in, the original and the result are saved in your account history.
Can I compress several images at once?
No, one image at a time.
Will the dimensions change?
No. Compression saves the file again with the same dimensions; to change dimensions, use Resize Image.
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Call it from code
One endpoint, key in the header. The same tool that runs on this page — no browser, no clicking.
curl -X POST https://pixelift.pl/api/compress-image \
-H "Authorization: Bearer pk_live_..." \
-F "file=@zdjecie.jpg" \
-F "quality=80" \
-F "format=webp"Response: { "image": "https://pixelift.pl/uploads/…", "creditsUsed": 1 }
Request fields
file | file | required | Zdjecie |
quality | number | optional | |
format | jpeg · png · webp · avif | optional |