WebP Converter
Convert JPG or PNG images into compact WebP for faster-loading pages — one at a time or a batch into a ZIP — all done locally, without uploading a thing.
WebP Converter is a browser-based image tool on ImgToolsBase. Convert JPG or PNG images into compact WebP for faster-loading pages — one at a time or a batch into a ZIP — all done locally, without uploading a thing. To use it, upload or drop your image and view the result directly in your browser — no signup and nothing to install.
How this tool works
WebP output
Convert JPG, PNG, and more to WebP, the modern web format that is usually smaller at the same visual quality.
Compression for the web
Use the quality slider to cut page weight; WebP typically beats JPG and PNG byte-for-byte, so pages load faster.
Alpha transparency kept
Unlike JPG, WebP keeps an alpha channel, so a transparent PNG converts to a smaller WebP without a flat background.
Private by design
Conversion runs entirely in your browser; nothing is uploaded, and canvas re-encoding drops EXIF and other metadata.
WebP Converter in your browser
WebP Converter converts images in your browser and lets you choose the output format — JPG, PNG, WebP, or Same as input (which keeps JPG, PNG, or WebP and falls back to JPG for other formats). It is focused on WebP — convert images to WebP using the browser’s canvas encoder, or convert WebP files to JPG or PNG as a fallback.
Select multiple files to convert them all at once and download a ZIP, with a per-file status list that skips anything that is not an image and keeps going. For JPG output, pick the background color used to fill transparency; the quality slider applies to JPG and WebP only (PNG is lossless and ignores it). An optional target file size lets you aim for a size for JPG/WebP output, reported as under or over.
WebP Converter processes everything in your browser — nothing is uploaded. Animated GIFs are exported as a single still frame — animation, timing, and frames are not preserved by this canvas tool. Re-encoding through the browser canvas removes EXIF and other metadata.
How to use WebP Converter
- Upload one image, or several, into WebP Converter — click, press Enter, or drag the files in.
- WebP is the output format here; set the quality to balance sharpness against size, since WebP is usually smaller than JPG or PNG at a similar quality.
- WebP keeps transparency, so any PNG transparency is preserved without choosing a background colour; click Process to convert to WebP.
- Review each WebP in the result panel or per-file list, then download — a single file directly, or a ZIP for a batch built for the web.
Why use WebP Converter
Convert JPG, PNG and more to WebP, the modern web format that is usually smaller at the same visual quality.
Use WebP to cut image weight on a site without an obvious drop in quality; tune it with the quality slider.
Unlike JPG, WebP keeps an alpha channel, so transparent PNGs convert without a flat background.
Every conversion runs in your browser; nothing is uploaded.
Common uses for WebP Converter
Convert JPG and PNG assets to WebP to reduce page weight and improve load time.
Convert a large transparent PNG to a much smaller WebP that still has an alpha channel.
Convert a folder of images to WebP at once and download a single ZIP.
Convert from a phone, tablet, or computer browser with files staying local.
Frequently asked questions
Are my images uploaded to a server by WebP Converter?
No. WebP Converter converts every file in your browser using the HTML canvas, and nothing is sent to imgtoolsbase or any server.
Can WebP Converter convert several files at once?
Yes. Select multiple images and WebP Converter converts them all and downloads a ZIP, listing each file’s result and skipping any non-image files with a note.
Does the quality slider affect PNG output in WebP Converter?
No. PNG is lossless, so most browsers ignore a quality value for PNG. In WebP Converter the quality applies to JPG and WebP output; the result panel shows whether quality was used.
What does "Same as input" do in WebP Converter?
In WebP Converter, it keeps the original format when it is JPG, PNG, or WebP — useful when you only want to strip metadata, normalize, or approach a target size; other formats fall back to JPG, and the result panel says so.
What happens to transparency when WebP Converter outputs JPG?
JPG cannot store transparency, so WebP Converter fills transparent areas with the background color you choose; PNG and WebP output preserve transparency when the source has it.
What if my browser cannot encode the WebP output mode I selected?
When you set the output to WebP, WebP Converter encodes with the browser’s canvas WebP encoder. On a very old browser without WebP support, that output mode stops with a clear error — switch the output format to JPG or PNG instead. WebP Converter offers quality-based WebP, not advanced encoder settings.
Related image tools
Tools that pair well with WebP Converter.