Image Tools
Compress Images Online
Open a JPG, PNG, or WEBP file, choose a JPEG quality, and compare before/after sizes. Images wider or taller than 2400 pixels are scaled down. Compression uses the Canvas API — it is lossy JPEG output, not a lossless PNG optimizer.
Your workspace
Runs in your browserHow to use
- 1Drop an image.
- 2Move the quality slider if you want a smaller file.
- 3Compare the before and after sizes.
- 4Download the compressed JPEG.
What this tool does
- — Quality slider
- — Before/after sizes
- — Max dimension 2400px
Useful when
- — Email attachments
- — Shrinking photos for a form upload
- — Web-ready JPEGs
Limits
- — Output is JPEG, so PNG transparency is flattened.
- — “Up to 90% smaller” is not guaranteed — it depends on the original.
Where processing happens
The file is drawn to a canvas and exported as JPEG at the quality you set. Nothing is uploaded to ToolNest.
Questions
Will this keep PNG transparency?+
No. The download is a JPEG, which has no alpha channel.
Are images uploaded?+
No. Compression is local.
Guides for this tool
- How to prepare product images for an online store
Prepare product photos, remove simple backgrounds, compress JPEG copies and verify a store QR code.
- How to prepare PDF attachments for office email
Combine office PDFs, extract requested pages and check attachments before sending them to colleagues.
- How to convert JPG or PNG images to PDF
Turn photos or screenshots into an A4 PDF in the browser. When to use JPG vs PNG, and what “A4” means for panoramas.
- How to turn PDF pages into JPG images
When a raster export is useful, what 2× rendering means, and why this is not OCR.
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