JPEG to PNG Converter — Lossless Base for Camera Photo Editing

How to convert JPEG to PNG

1. Drop your JPEG files onto the converter above — or click to browse. Camera files with .jpeg extension are fully supported.
2. Click Convert on any individual file, or Convert all to process the entire batch at once.
3. Download individually or click Download all for a single ZIP archive.
4. Tip: PNG captures the JPEG at its current state — convert before editing to protect quality through every future round of adjustments.

Camera JPEG files processed locally — no upload, no cap

JPEG files from modern cameras range from 8 to 25 MB each. This converter loads them directly into your browser's RAM via the Canvas API — no upload bottleneck, no server-imposed file size cap.

Conversion runs offline once the page has loaded. Drop an entire camera shoot, convert all, and download the ZIP on a flight or train — no internet connection needed after the initial page load.

// JPEG has no transparency — no white fill needed
const canvas = document.createElement('canvas')
canvas.width = img.width
canvas.height = img.height
canvas.getContext('2d').drawImage(img, 0, 0)
// No quality param — PNG is lossless by spec
canvas.toBlob(cb, 'image/png')

Who converts JPEG to PNG

Photographers shooting JPEG with Canon, Nikon, or Sony cameras who edit in Lightroom, Capture One, or GIMP. Converting the whole shoot to PNG before editing preserves pixel quality through every round of adjustments.

iPhone and Android users editing photos on a Mac or PC in apps that re-save as JPEG. A single JPEG → PNG conversion protects originals from accumulating artifacts across multiple editing sessions.

Print designers using camera JPEG files as source material for Illustrator or InDesign layouts. Working in PNG for composition avoids compounding JPEG compression in the final print-ready PDF.

JPEG vs PNG — format comparison

When to use PNG vs keep JPEG

Convert JPEG to PNG when:

• Multi-step photo editing — PNG stops compression artifacts from accumulating across editing rounds
• Lightroom / Capture One exports — convert to PNG before compositing or further retouching
• Adding transparency — convert to PNG first, then remove background in your editor
• Illustrator / InDesign layouts — embed PNG to avoid JPEG re-compression in print PDFs
• Logos and icons from photo sources — PNG preserves sharp edges that JPEG softens

Keep JPEG when:

• Final web delivery — JPEG is 3–8× smaller; use it for the published image
• Social media uploads — platforms recompress everything; JPEG is the right source format
• Camera archives — original JPEG shoots lose nothing extra by remaining JPEG
• Email attachments — JPEG keeps file sizes manageable for mail clients

JPEG, JPG, and how the conversion works

JPEG and JPG are the same format — Joint Photographic Experts Group. JPEG is the full extension; JPG is the 3-character version that became default on Windows. Every tool, browser, and this converter treats them identically.

Conversion draws the JPEG onto an HTML5 Canvas, then encodes the pixels as PNG via toBlob(). No quality parameter is needed — PNG is lossless by specification. Existing JPEG artifacts are captured but no new ones are introduced.

const blob = await new Promise(resolve => {
  const img = new Image()
  img.onload = () => {
    const canvas = Object.assign(
      document.createElement('canvas'),
      { width: img.width, height: img.height }
    )
    // PNG: lossless — no quality argument
    canvas.getContext('2d').drawImage(img, 0, 0)
    canvas.toBlob(resolve, 'image/png')
  }
  img.src = URL.createObjectURL(jpegFile)
})