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Image Reducer

PNG to WebP Converter — Free, Batch, Browser-Based

Convert a batch of PNG files to WebP, free and in your browser

Need to convert PNG images to WebP — one file, or a whole folder at once? image-reducer.com is a free, complete image toolkit: it converts between JPG, PNG, WebP, and AVIF, batch-processes any number of files in one pass, hits an exact KB target for JPEG output, crops/rotates/flips, compares results before and after, and works in 7 languages including right-to-left Arabic — no account, no cap. Every conversion is processed entirely in your browser and never sent to a server. Below: why WebP usually wins, the exact steps, how to pick a quality setting, and when PNG is still the right call.

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Why convert PNG to WebP

PNG is lossless, which makes it dependable but heavy, especially for photo-like images. WebP typically produces a noticeably smaller file at a similar visual quality, and it still does PNG's signature job: transparency. Converting a transparent PNG to WebP keeps the transparent areas intact, so logos, icons, and cutout product photos keep working after the swap. Browser support for *viewing* WebP is broad today — the same ~90–95% range of global browser share that current-generation AVIF now reaches — which is why WebP has become a safe default for lighter product photos and blog images that load faster, transparency included.

How to convert PNG to WebP, step by step

  1. Add your PNG files. Drag them onto "Drop images here," or use "or click to browse" → "Select images." Add a whole batch at once, or more later with "Add images."
  2. Set the format to WebP. In "Output settings," change "Format" from its default, "Keep original," to WebP — skip this and your files stay PNG.
  3. Adjust "Quality." WebP output is controlled by the "Quality" slider, not an exact KB number — "Target file size" mode currently outputs JPEG only.
  4. Resize if you want smaller dimensions too, not just a smaller file: turn on "Resize" → "Fit within" and set a max width/height.
  5. Compare before you commit. Open "Compare" and "Drag to compare" to check "Before" against "After."
  6. Download. Use "Download" for one file, or "Download all (ZIP)" for the whole batch.

Picking the right quality setting for WebP

The slider defaults to 72 — a reasonable middle ground. Check any choice against "Compare" rather than guessing:

  • Detailed photos or product shots: 80–90 keeps edges and texture crisp, still smaller than the

source PNG.

  • Everyday photos or blog images: the default is dependable without much visible change.
  • Simple graphics or icons: 50–65 can work, but check "Compare" first — a small PNG icon may not

save much either way.

When to keep PNG instead

  • You need guaranteed pixel-for-pixel output — a screenshot with small text, or a diagram you'll

keep editing. PNG never introduces compression artifacts, at any quality setting.

  • The destination specifically requires a `.png` file — some forms and older software check the

file extension itself.

  • The source is already a tiny icon — the size difference between PNG and WebP can be a few hundred

bytes, not worth trading compatibility for.

Quick answers

Will WebP work everywhere? Viewing a WebP image works in essentially every current browser; if a destination requires a specific format, keep JPG or PNG instead.

Can I convert back to PNG? Yes — set "Format" to PNG on a WebP file. The result is lossless from that point forward, but it can't restore detail a lossy WebP pass already discarded.

Does converting keep the transparent background? Yes. WebP supports transparency the same way PNG does, at any quality setting.

For a fuller comparison of all four formats, see JPEG vs PNG vs WebP vs AVIF: Which Should You Actually Use?. Want even smaller files on a Chromium-based browser? image-reducer.com also converts to AVIF from the same batch, with an automatic WebP fallback and a visible notice where AVIF isn't supported.