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Convert Image

Convert between PNG ↔ JPG ↔ WebP

How it works

Convert Image — Convert between PNG ↔ JPG ↔ WebP. All processing happens in your browser — no upload, no signup, no email required. Free forever.

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About Convert Image

Image Convert switches between JPG, PNG, and WebP — the three formats that cover almost every web and app workflow. Each format has trade-offs: JPG is small but lossy and has no transparency, PNG is lossless and supports alpha but produces large files, WebP is the modern compromise that beats both for the web. This tool lets you pick the right one without command-line tools or Photoshop.

Designers reach for it when a developer asks for WebP. Marketers use it to convert PNG screenshots into smaller JPGs before emailing decks. Developers batch-convert old JPG assets to WebP to slash bandwidth bills. The tool handles single files or whole folders with the same workflow.

Conversion runs locally in your browser via canvas, so private mockups, unreleased product shots, and personal photos never leave your machine.

How to use Convert Image

  1. Drop or browse for the images you want to convert — JPG, PNG, or WebP.
  2. Pick the target format: JPG, PNG, or WebP.
  3. If the target supports it, drag the quality slider (1–100) to balance file size and visual fidelity.
  4. Review the size delta on each row — converted files show old size, new size, and savings.
  5. Click per-row Download or Download all to grab the converted batch.

Common use cases

  • Converting product PNGs to WebP to cut a Shopify storefront's image weight by ~30%.
  • Switching iPhone HEIC-derived JPGs into PNG to preserve sharp edges in design mockups.
  • Turning transparent PNG icons into JPG with a white background for a Word document.
  • Bulk-converting a screenshot folder to WebP before uploading to a static site.
  • Producing JPG previews from heavy PNG renders for a portfolio gallery.

Tips & common mistakes

  • Always convert to WebP when the target browsers are modern (Chrome, Edge, Firefox, Safari 14+). It's smaller and supports transparency.
  • Don't convert PNG → JPG if your image has transparency — the alpha channel becomes a white background.
  • For UI screenshots with text, prefer PNG or WebP. JPG's lossy encoding makes thin text fuzzy.
  • A quality slider value of 80 is the sweet spot for JPG and WebP photos — barely distinguishable from 100, half the file size.

Frequently asked questions

Which conversions are supported?

Any of JPG, PNG, WebP — to any other. WebP gives the smallest files for web use; PNG is best for graphics with transparency.

Will transparency be preserved?

Yes for PNG and WebP. JPG does not support transparency, so transparent areas become white.

How is quality controlled?

Use the quality slider for JPG/WebP. PNG is lossless and ignores the slider.

Can I convert HEIC photos from my iPhone?

Not directly yet — HEIC needs a separate decoder that browsers don't all expose. AirDrop or share the photo as JPG first, then run it through Image Convert. HEIC support is on the roadmap.

Does converting to PNG and back to JPG hurt quality?

PNG is lossless, so the round-trip is governed by the JPG step. A single PNG → JPG conversion at quality 90 is visually clean; repeated round-trips will progressively degrade detail.

Why is my converted JPG bigger than the original PNG?

Some content (large flat colour areas, simple icons) compresses better as PNG than as JPG. PNG's lossless compression actually wins for graphics; JPG only beats it on photographs.

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