Convert JPG to PNG
Transform JPG images to PNG format.
Convert multiple JPG to PNG online at once.
or drop JPG images here
All files are processed locally 100% in your browser and never uploaded to our servers.
Convert JPG to PNG Online — Free & Secure
Easily convert one or many JPG (JPEG) photos to PNG images — right in your browser. Our tool converts files locally (no server upload), preserves original dimensions, and delivers a single ZIP for quick download. Perfect for designers, developers, and anyone who needs lossless PNGs.
Key benefits / Why convert JPG → PNG
Lossless format: PNG stores images without the lossy compression used by JPG. Great for graphics, screenshots, logos, and images that need pixel clarity.
Transparency support: PNG can include alpha transparency (note: converting a JPG won’t magically add transparency, but PNG supports it).
Better for editing: PNG is preferred when you plan to re-edit, overlay, or composite images.
Web & development: Use PNGs for icons, UI elements, and images where sharp lines matter.
Features of this page/tool
- Convert single or multiple JPG files at once.
- Client-side conversion — files never leave the user’s computer.
- Batch ZIP download: all converted PNGs packaged into one ZIP.
- Automatic filename sanitisation for compatibility.
- Works on modern browsers (Chrome, Edge, Firefox, Safari).
- Mobile-friendly — converts on phones & tablets (subject to browser memory).
How to use (step-by-step)
Click Select JPG images (or drag & drop) and choose your
.jpg/.jpegfiles.The converter will run locally in your browser and convert each image to PNG.
After conversion, download a single ZIP named
unitconvertertool_converted_images.zipcontaining all PNGs.Extract and use the images. (Windows might show a one-time warning for ZIPs downloaded from the web — see FAQ.)
Technical notes (what to expect)
Transparency: JPG has no alpha channel. Converting JPG → PNG will produce non-transparent PNGs (opaque) unless you edit transparency manually afterwards.
File size: PNGs are typically larger than JPGs for photographic images because PNG uses lossless encoding. Use PNG for quality/graphics; use JPG/WebP for smaller photo files.
EXIF & metadata: Browser canvas conversions usually do not preserve EXIF metadata (camera data, geo-tags). If metadata preservation is critical, use a server-side tool that explicitly copies EXIF.
Color profile: Embedded ICC color profiles may be lost during canvas-based conversions — verify colors on final output.
Max file size / memory: Converting very large images (tens of MB / high resolution) can be memory-intensive in-browser; consider resizing before conversion if you run into issues.
Filename sanitisation: Filenames will be cleaned to remove problematic characters to avoid Windows/ZIP issues.
Use cases / Examples
Convert product photos for catalog images that need crisp edges.
Turn screenshots saved as JPG into PNG to avoid compression artifacts.
Convert images to PNG before creating transparent composites or icons.
Convert for graphic design workflows where repeated edits are expected.
FAQ(Frequently asked questions)
What is the difference between JPG and PNG?
JPG is a lossy compressed format ideal for photos (smaller files, some quality loss). PNG is lossless and supports transparency, best for graphics, screenshots, and images that require sharp edges.
Will my PNG be larger than the original JPG?
Usually yes for photographs — PNG is lossless, so file sizes are often bigger than JPGs. For simple graphics with large flat colors, PNG can be smaller.
Will converting JPG to PNG improve image quality?
No — conversion to PNG won’t recover detail lost from the original JPG compression. PNG prevents further quality loss in future edits, though.
Can converting to PNG add transparency?
Not automatically. JPG files don’t contain alpha channels. To make parts transparent you must edit the PNG in a tool that supports alpha removal or background erasing.
Does this tool upload my images to your server?
No. Conversion happens in your browser (client-side). Your images are not uploaded or stored on our servers.
Why does Windows sometimes warn me after extracting the ZIP?
Windows SmartScreen may flag files downloaded from the internet. To reduce warnings ensure site uses HTTPS and filenames are sanitized; server-side generation also reduces flags. We sanitize names, but one-time Windows messages can still appear.
Will EXIF metadata (camera info) be preserved?
Client-side canvas conversions typically strip EXIF metadata. If you need EXIF preserved, use a server-side conversion tool that copies metadata.
Are there limits on file size or number of files?
Limits depend on browser memory and device. Very large images (e.g., >20–50 MB each) or many high-res files may cause slowdowns. We suggest batch sizes that fit your device memory.
Can I convert GIFs/animated images with this tool?
This particular JPG→PNG converter handles static JPGs. Animated GIFs require specialized handling (extract frames) and will be offered on our GIF tools.
Will color profiles (sRGB, Adobe RGB) be preserved?
Color profiles may not be fully preserved in canvas conversions. For exact color-critical workflows use a server-side tool supporting ICC profile handling.
Can I convert RAW or HEIC images to PNG?
RAW/HEIC require special decoders; they’re not directly supported by simple canvas-based conversion. We provide separate tools or server-side options for RAW/HEIC conversions.
Is the ZIP safe? Why did my browser mark it ‘unsafe’?
The ZIP itself is safe; browsers and OS sometimes mark programmatically created files. Use HTTPS and sanitized filenames. Alternatively, instruct users to extract and mark files safe if prompted.
Can I batch rename converted files?
Filenames are preserved (with .png extension) and sanitized. If you need custom batch renaming, use a dedicated renamer tool after download.
Is the conversion lossless?
PNG output is lossless relative to the canvas export — but any data already lost in the original JPG cannot be recovered.
Can I convert to PNG-8 (indexed palette) to reduce size?
Browser canvas exports produce 24-bit PNGs. PNG-8/palette reductions require additional quantization libraries; this may be added as an optional advanced feature.
Does the tool preserve transparency if the JPG originally had alpha?
JPG does not support alpha; if you have images with transparency, they’re usually PNG/WebP already. Converting JPG → PNG won’t add alpha.
How do I convert PNG back to JPG?
Use our PNG to JPG tool; conversion is straightforward — PNG to JPG will flatten transparency (optionally replacing transparent areas with a background color).
Is there a mobile-friendly version?
Yes — the converter runs in mobile browsers, but performance depends on device memory and browser capabilities.
Why are my colors slightly different after conversion?
Color shifts can be caused by loss of ICC profiles or browser color management. For color-critical work, use an offline tool that preserves profiles.
Do you have an API for bulk or automated conversions?
We can offer a server-side API plan for heavy/bulk conversions (requires server processing and storage). Contact us to discuss scale, pricing, and security.