JPG to PNG Converter — Lossless, Locally, No Upload
Convert JPG images to PNG in your browser. Lossless output — no re-compression artifacts. Batch download supported. 100% local.
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Conversion runs in your browser — nothing is uploaded. Output: PNG.
Convert JPG to PNG in your browser. Lossless output — no additional compression artifacts. Batch download supported. Nothing is uploaded.
What is JPG → PNG?
PNG is the default when you need lossless preservation, transparency, or exact pixel fidelity — for design assets, screenshots you want to re-edit, or icons. Converting JPG to PNG doesn't recover detail JPG threw away, but it stops adding new compression on top. This tool decodes each JPG and re-encodes as PNG, entirely in your browser.
How to convert JPG to PNG
- 1Drop one or many JPGs into the drop zone.
- 2Click 'Convert to PNG' — PNG is lossless, so there's no quality slider.
- 3Download individually or in batch.
Use Cases
Prep design assets
Bring a JPG into a design tool that needs a lossless working copy.
Add transparency later
PNG's alpha channel lets you cut out backgrounds with any editor.
Preserve for archival
Once in PNG, subsequent edits don't accumulate lossy compression.
Tips & Best Practices
- ▸PNG output is typically 3-10× larger than the source JPG. If the goal is smaller files, keep JPG or try WebP.
- ▸For scanned documents and text-heavy content, PNG is often the right choice — JPG's blockiness on text is objectionable.
- ▸PNG doesn't 'sharpen' or 'restore' the image. If the JPG looks bad, the PNG will look identical.
Frequently Asked Questions
Will the output be sharper than the input?
No. PNG is lossless, so the output preserves exactly what was in the JPG — but JPG's original compression artifacts (block noise, color banding) remain. PNG can't recover detail that JPG threw away.
Why is the PNG bigger than the source JPG?
JPG uses lossy compression, PNG uses lossless. PNG files are typically 3-10× larger than the equivalent JPG. Use PNG only when you need lossless (screenshots, diagrams) or transparency.
Is my file uploaded?
No. Everything runs locally in your browser using Canvas.
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