WebP to PNG Converter: Free, Private, No Upload

What actually changes in this conversion

• WebP can be lossy or lossless. If your file was saved lossy, converting to PNG stops further loss but does not restore detail.
• Transparency is preserved, including soft edges.
• WebP can hold animation, but PNG cannot, so the result is a single still frame.
• Expect the PNG file to be far larger than the WebP source.
• EXIF, GPS and camera data are stripped on every conversion. That is good for privacy, but you lose capture dates.

About WebP: history and technical details

Announced by Google in September 2010, based on the VP8 codec acquired with On2 Technologies. First format to combine lossy, lossless, alpha and animation in one specification. Safari support arrived in 2020 with macOS 11.

Technical: Lossy WebP uses VP8 intra-frame coding with 4x4 and 16x16 block prediction. Lossless WebP uses a new algorithm with colour cache and LZ77 backward references. Max dimensions 16,383 by 16,383.

Real-world size: Lossy WebP at quality 80 is typically 25-35% smaller than JPG at quality 85 for photographs. Lossless WebP is 20-30% smaller than PNG for graphics. Google reports 80% savings on some assets after switching to WebP.

Popular tools: Google Chrome (built-in encoder), cwebp, Squoosh, ImageMagick, Adobe Photoshop 2020+, Figma, WordPress (via plugin).

Alternatives: AVIF (30-50% smaller but slower to encode), JPG (universally accepted), PNG (lossless), HEIC (Apple ecosystem).

About PNG: what you get

Created in 1995 as a free, patent-unencumbered replacement for GIF after Unisys began charging royalties for LZW compression. Became a W3C Recommendation in 2003. The signature bytes are 89 50 4E 47 0D 0A 1A 0A — "PNG" with newlines designed to catch file corruption.

Technical: Uses DEFLATE (LZ77 + Huffman) compression. Two main modes: 8/16-bit truecolour with alpha, and 8-bit indexed with up to 256 colours. Filters per scanline (None, Sub, Up, Average, Paeth) before DEFLATE for better ratios.

Real-world size: A 1920x1080 screenshot is 200-600 KB as PNG. As JPG at quality 85 it is 100-300 KB but with blurry text. A 12-MP photo is 18-25 MB as PNG, 2-4 MB as JPG. PNG wins on text, JPG wins on photos.

Popular tools: Adobe Photoshop, GIMP, Figma, Sketch, Snipping Tool, macOS Screenshot, ImageMagick, pngquant, oxipng.

Alternatives: WebP lossless (20-30% smaller), AVIF (better for photos), JPG (photos only), SVG (vector graphics).

Browser and software compatibility

WebP: Supported by current Chrome, Edge, Firefox, Safari and Opera, but not by every older editor, office suite or upload form. PNG: Opens in every browser and image editor.

PNG output opens in virtually every browser, operating system and editor.

Why people move away from WebP

• Some CMS uploaders, marketplaces, print shops and older editors do not accept WebP.
• Saving an image from a website often leaves you with a WebP that Office documents and older viewers will not open.
• WebP has no HDR or wide-gamut support, so AVIF is the better choice for those images.

Why people choose PNG

• PNG keeps every pixel, making it safe for screenshots, diagrams, logos and anything with text.
• It stores full alpha transparency, including soft shadows and anti-aliased edges.
• Lossless output means you can keep editing without generational loss.

Common mistakes with WebP

• Re-converting a WebP that was already made from JPG — stacks two rounds of lossy compression
• Serving WebP without a JPG fallback for very old Safari (pre-2020)
• Expecting WebP to open in older Office versions — it will not

Common WebP to PNG scenarios

• Editing a WebP: PNG opens in every editor and keeps any transparency from the WebP.
• Keeping a lossless copy: If your WebP was lossless, PNG avoids adding another lossy pass.

Best practices for keeping quality

• If your WebP was originally made from a JPG or PNG, convert from the original instead. Going from lossy WebP to another lossy format stacks two rounds of compression.
• Converting a lossy file to PNG stops further loss but does not restore detail already discarded. Expect a much larger file with no visible gain.
• PNG suits screenshots and flat graphics. For photographs, a lossy format is usually the better trade.
• Resize before converting if the image will be shown small. A 4000 pixel photo displayed at 800 pixels wastes bytes in any format.
• Check the result at 100 percent zoom, especially around text, edges and gradients, before you replace any originals.
• Keep your original files. Conversions to a lossy format cannot be undone.
• When you convert a set of images, use the same quality setting for the whole batch. The converter handles up to 20 files at once.