Convert JPG to lossless PNG with color-to-transparency and resize
WhiskFile JPG to PNG is a free online tool to convert JPG to lossless PNG with color-to-transparency and resize. Files are processed entirely in your browser — nothing is uploaded to any server.
Quick Answer
Convert JPG to lossless PNG with color-to-transparency and resize. WhiskFile's JPG to PNG is free, works in your browser, and requires no account. Your files never leave your device — all processing happens locally.
Upload JPG images
Select or drag and drop one or more JPG/JPEG files. You'll see thumbnail previews, file sizes, and EXIF badges for each image.
Enable transparency
Toggle 'Make Color Transparent' and pick the background color to remove: White, Black, Green, or any custom color. Adjust tolerance for edge precision.
Set resize options
Optionally enable Resize and choose a scale preset (75%, 50%, 25%) or use the slider for any scale from 10% to 200%.
Convert all images
Click Convert — all images process instantly in your browser. No upload, no waiting for a server.
Preview results
See checkerboard previews for transparent areas, file size comparisons, and transparent pixel counts for each image.
Download files
Download images individually or as a single ZIP file. Converted PNGs are ready to use immediately.
Max file size: 50 MB (free) · 500 MB (paid). Processing time: ~1s on average. Batch processing: upload multiple files at once.
JPG to PNG runs entirely in your browser — no software to install. Works on any device with a modern browser.
Windows & Mac
Chrome, Firefox, Edge, Safari
iPhone & Android
Safari, Chrome mobile
iPad & Tablets
Full touch support
Unlike server-based tools that upload your documents, WhiskFile processes everything locally in your browser. Your files never leave your device — not even temporarily.
No upload required
Files are processed in your browser — nothing is sent to any server
100% private
No server storage, no data collection, no third-party access
Works offline
Once loaded, works without an internet connection
“Batch-converting RAW exports to web formats saves me hours every week. The quality is excellent.”
Carlos Ruiz
Photographer
“Resizing and converting images for different platforms used to be tedious. Now it's drag and done.”
Priya Sharma
Social Media Manager
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Client-side processing
This tool now runs entirely in your browser — files never leave your device.
Result preview & sharing
Preview your processed file before downloading, and share results via a secure link.
Yes! Enable 'Make Color Transparent', pick the background color (white, black, or any custom colour), and adjust the tolerance slider. Matching pixels become fully transparent in the output PNG.
Converting to PNG preserves the current quality in a lossless format, but it won't restore detail lost during JPEG compression. PNG ensures no further quality loss on future saves.
PNG uses lossless compression, so files are typically larger than JPEG. This is the trade-off for perfect quality preservation and transparency support.
Tolerance controls how closely a pixel must match the chosen color to become transparent. At 0%, only exact matches are affected. Higher values include similar shades, useful for gradients or JPEG artifacts around edges.
Yes. Enable the Resize toggle and choose a preset (75%, 50%, 25%) or use the slider for any scale from 10% to 200%. All images in the batch are scaled uniformly.
All conversion happens locally in your browser. Your images are never uploaded to any server — they never leave your device. EXIF metadata is also automatically stripped.
No. Converting from JPG to PNG preserves the current quality in a lossless format, but it cannot restore detail already lost during JPEG compression. The benefit is that PNG prevents any further quality loss on subsequent saves.
Yes. WhiskFile runs entirely in your browser — no software download, no app, no Photoshop needed. Just open the page, drop your JPGs, and convert instantly.
Yes. The converter works on any device with a modern browser — iPhone, Android, iPad, or desktop. No app installation needed.
Pick the background color you want to remove (white, black, green, or any custom color). The tool makes all matching pixels transparent. Adjust the tolerance slider to include similar shades — useful when JPEG compression creates slight color variations around edges.
Yes. Upload as many JPG/JPEG files as you need. All are converted at once with the same settings. Download individually or as a single ZIP file.
No hard limit. Upload as many images as you need and batch convert them all at once. Processing speed depends on your device since everything runs locally.
Usually yes. PNG uses lossless compression, so files are typically 2-5x larger than the JPEG original. This is the trade-off for perfect quality preservation and transparency support.
Yes. JPG to PNG on WhiskFile is completely free with no account required. Free users get 7 tasks per day with files up to 50 MB. There are no watermarks on any plan. Pro plans ($4.99/month) unlock unlimited tasks, 500 MB files, batch processing, and API access.
JPG to PNG accepts JPG, JPEG files as input and produces PNG output. The maximum file size is 50 MB on the free plan (500 MB for Pro users). There are no page count limits.
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Chromebook & Linux
Any modern browser
