Convert JPEG images to PNG for lossless quality and transparency.
Drag and drop JPG files here
or choose files below (bulk upload supported)
Supports JPG/JPEG only. Max file size: 20MB each.
Supports: JPG/JPEG → PNG
Convert multiple JPG files at once
No signup required • Instant results • 100% browser-based
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Drop files above and get instant PNG downloads.
No signup required • Instant results • 100% browser-based
JPG to PNG Converter transforms JPEG images into lossless PNG format in your browser — stopping further quality degradation and enabling transparency support for graphics, logos, and icons.
Click the upload area or drag and drop a .jpg or .jpeg file. Files up to 20 MB are supported. You can also paste an image directly from your clipboard. The file is loaded into your browser only — nothing is uploaded.
A preview of the converted PNG appears immediately. Check that the image looks as expected. Note: the background will be white (not transparent) because JPEG has no transparency information.
Click the 'Download PNG' button. The file saves as a .png with the same base filename as the original JPEG.
Common real-world scenarios where this tool saves time.
JPEG does not support transparency. Convert a JPEG logo or product photo to PNG first, then use a background removal tool to get a clean transparent PNG for use on coloured or dark layouts.
Each JPEG re-save degrades quality through re-compression. Convert to PNG once at the start of an editing workflow and keep all intermediate saves lossless — convert back to JPEG only for the final web delivery.
Some government portals, document systems, and applications require PNG file uploads specifically. Convert existing JPEG photos to PNG to meet these format restrictions without re-photographing.
JPEG compression blurs text and creates artefacts around sharp UI edges. Save and share screenshots as PNG to keep text, buttons, and interface elements pixel-sharp in documentation, slide decks, and wikis.
Small logos and icons (under 200 px) stored as JPEG show block artefacts that are disproportionately visible at small sizes. Converting to PNG preserves crisp edges with zero compression noise.
Input
company-logo.jpg · 48 KB · 600×200 pxOutput
company-logo.png · 185 KB · 600×200 px (lossless, white background)Converting the JPEG logo to PNG stops further quality loss from re-saves. The PNG is larger but is now the correct input format for a background removal tool, which requires lossless PNG to produce clean transparent edges.
Input
api-docs-screenshot.jpg · 280 KB · 1280×720 pxOutput
api-docs-screenshot.png · 950 KB · 1280×720 pxText and UI elements in screenshots stay sharp when stored as PNG. JPEG compression blurs sharp edges and text — noticeable in documentation, slide decks, and wikis where readers zoom into screenshots. The larger file size is the trade-off for legibility.
Input
product-photo.jpg · 420 KB · 2000×1500 px (already compressed at Q75)Output
product-photo.png · 3.2 MB · 2000×1500 pxEditing a JPEG and re-saving it as JPEG degrades quality with each save. Converting to PNG once and editing in PNG format means all intermediate saves are lossless — final quality loss happens only when converting back to JPEG for web delivery.
Conversion draws the JPEG source image onto an HTML Canvas using drawImage(), then exports the canvas as PNG using toDataURL('image/png'). Because PNG is a lossless format, the toDataURL call preserves every pixel from the decoded JPEG — including any JPEG compression artefacts already present in the source.
| Characteristic | JPEG | PNG |
|---|---|---|
| Compression type | Lossy — discards data on each save | Lossless — every pixel preserved exactly |
| File size (photographs) | Small (100–500 KB typical) | Large (1–8 MB typical) |
| File size (graphics/logos) | Medium (artefacts visible) | Small to medium (efficient for flat colours) |
| Transparency support | No — white or solid background only | Yes — full alpha channel (0–255 per pixel) |
| Best use case | Photographs, hero images, product photos | Logos, icons, screenshots, transparent graphics |
| Re-save quality | Degrades with each re-save | No quality loss on repeated saves |
| Conversion | Output Format | File Size vs JPEG | Best For |
|---|---|---|---|
| JPG → PNG | PNG (lossless) | 3–8× larger | Editing, transparency prep, sharp text/graphics |
| JPG → WebP (lossless) | WebP (lossless) | 1.5–3× larger | Modern web — lossless with better compression than PNG |
| JPG → WebP (lossy) | WebP (lossy) | 25–35% smaller | Web delivery with better quality-to-size ratio than JPEG |
| JPG → AVIF | AVIF (lossy) | 40–50% smaller | High-efficiency modern web images, largest browser support gap |
| Related tool | Use this tool when | Use related tool when |
|---|---|---|
PNG files are 3–8× larger than equivalent JPEGs. Converting everything to PNG wastes storage and bandwidth. Choose PNG only for editing workflows, background removal prep, format compliance, or graphics that need sharp edges.
Lossless WebP achieves the same pixel-perfect quality as PNG with ~25% smaller files. All modern browsers support WebP. For web delivery where compatibility with legacy software is not required, lossless WebP is the better choice.
Pre-existing JPEG artefacts are preserved in the PNG output. If you have access to the original uncompressed image or a high-quality JPEG, convert from that source — not from an already heavily-compressed JPEG.
Converting JPG to PNG gives you a lossless file with a solid background — not transparency. You must run a separate background removal step to get actual transparent pixels in the output.
If you need to reduce file size, keep the JPEG and use the Image Compressor to lower the quality setting, or convert to WebP lossy format. Only use JPG-to-PNG when lossless quality or transparency support is the goal.
After converting to PNG, use a background removal tool to replace the white/solid background with actual transparency. JPG → PNG → background removal is the correct two-step workflow.
For web delivery, keep photographs as JPEG (or convert to WebP). Use PNG only for graphics, logos, icons, and screenshots where lossless quality and sharp edges are required.
JPG to PNG is a format change, not an image enhancement. Use an image editing tool if you need to fix JPEG artefacts, adjust sharpness, or improve colour.
Likely cause: JPEG does not have an alpha channel — all pixels are fully opaque. When the JPEG is drawn on the canvas and exported as PNG, the entire image is opaque with whatever background colour was in the original JPEG.
Fix:
Likely cause: This is expected. PNG is a lossless format that stores every pixel without any lossy compression. A 300 KB JPEG photograph stores heavily compressed data; the equivalent PNG stores 3–10× more data because nothing is discarded.
Fix:
Likely cause: JPG to PNG conversion is lossless — it copies the decoded JPEG pixels exactly. Artefacts that existed in the JPEG source are preserved pixel-for-pixel in the PNG output. The conversion does not remove or reduce pre-existing compression damage.
Fix:
Likely cause: Large images (over 15 MP) can produce PNG files exceeding 50 MB, which may exceed browser download limits or available memory on some devices.
Fix:
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It stops further quality loss but does not improve existing quality. The JPEG compression artefacts already present in the source are preserved exactly in the PNG output — they do not get worse, but they do not disappear either. The benefit of PNG is that all subsequent saves and edits are lossless.
The conversion runs entirely in your browser using the HTML Canvas API. Your image never leaves your device — no upload, no server processing, no data transmission. The tool also works offline after the page loads.
JPEG achieves small file sizes through lossy compression, discarding colour data the eye does not easily detect. PNG stores every pixel exactly (lossless), which requires significantly more data. A typical trade-off: 300 KB JPEG ≈ 1–2 MB PNG for the same image.
No. JPEG has no alpha channel — all pixels are fully opaque. Converting to PNG preserves the original white or coloured background. To get transparency, convert to PNG first, then use a background removal tool to replace the solid background with transparent pixels.
This tool processes one file at a time. For batch conversion, use ImageMagick from the command line: mogrify -format png *.jpg — this converts all JPEGs in the current folder to PNG. Adobe Bridge and GIMP's Script-Fu also support batch format conversion.
.jpg and .jpeg are identical formats — both are JPEG images. The .jpg extension became the default on Windows because early Windows versions required 3-character file extensions. Both extensions open identically in every image viewer, browser, and design application.
Yes. JPEG compression creates block artefacts around sharp edges and flat colours — clearly visible in logos at small sizes. PNG (lossless) and lossless WebP are the correct formats for logos, icons, and graphics with flat colours or sharp edges.
Use JPG to PNG when you need maximum compatibility — PNG works in every browser, email client, OS image viewer, and design application. Use JPG to WebP (lossless) when targeting modern web browsers and want a smaller lossless file — lossless WebP is ~25% smaller than PNG at identical quality.
No. The conversion decodes the JPEG to its uncompressed pixel values and saves those pixels losslessly in PNG format. No pixel data is changed, added, or removed. The only differences are the file container format and file size.
Yes — completely free with no signup required, no watermarks, and no usage limits. All processing runs in your browser at no cost.
All conversion processing runs in your browser using the HTML Canvas API. No image data is uploaded to any server, stored, or transmitted. Your files remain on your device at all times.
PNG output is a pixel-exact copy of the decoded JPEG source. No pixel values are modified during conversion.
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