JPG to PNG Crop Converter
Load a JPG, drag the crop handles to define exactly the area you need, preview the result, then download a lossless PNG. Everything runs in your browser — your image never leaves your device.
Drop a JPG here
or Browse Files · JPG / JPEG supported
What This Tool Does
This tool loads a JPG image directly in your browser, presents an interactive crop overlay with draggable handles, and converts the selected area to a lossless PNG file. No server upload is required. The full workflow — loading, cropping, encoding — runs entirely in client-side JavaScript using the HTML5 Canvas API. The output is a 24-bit RGB PNG, the format trusted by web developers, UI designers, and anyone who needs pixel-perfect images without compression artifacts.
Who This Is For
- Web developers who need a specific cropped region of a JPG as a lossless PNG for UI components or icons
- Designers preparing assets that require sharp edges, transparency support, or lossless quality for graphics tools
- Content creators cropping product images or screenshots from JPG sources for web publication
- Anyone who needs to trim and convert a JPG to PNG without installing Photoshop or GIMP
JPG vs PNG: Format Comparison
| Property | JPG | PNG |
|---|---|---|
| Compression | Lossy (DCT) | Lossless (DEFLATE) |
| Quality loss on re-save | Yes — each save degrades quality | No — bit-exact round-trip |
| File size | Smaller (photos compress well) | Larger for photos; smaller for graphics |
| Transparency support | No | Yes — full alpha channel |
| Web browser support | Universal | Universal |
| Sharp edges / text | Poor — blocking artifacts appear | Excellent — pixel-perfect rendering |
| Color bit depth | 8-bit per channel | 8 or 16-bit per channel |
| Best for | Photographs, web sharing, email | Graphics, UI, screenshots, icons, design |
Frequently Asked Questions
What is PNG and why is it preferred for web graphics?▼
PNG (Portable Network Graphics) stores image data using lossless DEFLATE compression. Unlike JPG, saving a PNG again produces a bit-for-bit identical file — there is no generational quality loss. It also supports full alpha transparency, making it the standard format for logos, UI components, icons, and any image that needs sharp edges or a transparent background.
How precise is the crop tool?▼
The crop operates at native pixel accuracy on the original JPG dimensions. The canvas is scaled to fit your screen for display, but the actual crop coordinates are mapped back to the full-resolution image before the PNG is generated. You get a PNG at the exact pixel dimensions shown in the crop dimensions badge.
Can I move the crop selection after setting it?▼
Yes — click and drag inside the crop rectangle (away from the handles) to reposition it anywhere within the image. Handles resize; the interior pans.
Will the PNG be larger than the source JPG?▼
Usually yes for photographic content, because PNG stores data losslessly while JPG discards detail to achieve compression. For a 12 MP photo, the PNG may be 10–30 MB versus 3–6 MB for a JPG. For graphics, screenshots, or images with large flat-color regions, PNG can actually be smaller.
What browsers are supported?▼
All modern browsers — Chrome, Firefox, Edge, Safari (desktop and mobile). The tool uses standard HTML5 Canvas and Blob APIs that have been universally supported since 2015.
Is there a file size limit?▼
There is no server-imposed limit because no upload occurs. The practical limit is your browser's available RAM. Most modern desktops handle JPGs up to 50 MP comfortably. Very large files on memory-constrained mobile devices may be slower to process.