Image Upscaler
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Smaller web images, transparency kept
Choose a file to start.
Imagera's PNG to WebP converter helps website owners, designers and sellers prepare web images in a browser on a phone, tablet or computer. Convert a transparent PNG to WebP while keeping its clear background and decoded pixel dimensions. Adjust Quality to balance visible detail against file size. Processing stays on your device; compare the result with the original before replacing a site asset. 2 free downloads, 8 more after sign-in.
Published · Updated · by the Imagera teamImagera is a browser-based AI studio for images, video, music and voice, so you do not need a separate app and account for every model. Pricing is credit-based: one balance covers every tool, and each job shows its credit price or estimate before you run it.
















A 2000 × 1200 PNG becomes a 2000 × 1200 WebP when conversion succeeds: 2.4 million pixels in either file. Fewer bytes do not mean fewer pixels.
Try 16K AI UpscalerEach conversion produces 1 still image. An animated PNG is not exported as a sequence of WebP frames.
There are 2 local encoding paths: the browser’s own encoder, then a WebP codec if the browser returns the wrong file type.
Use this converter when you already have a PNG and want a WebP version for a website. It reads the picture and writes a new image file. Renaming a filename alone does not perform that conversion.
The page accepts PNG or also JPG, WebP, HEIC, AVIF. Its output is fixed to WebP, and the conversion keeps the decoded width and height. Keep the PNG as your source, then try the new copy in the page or store where it will appear.
The WebP path keeps transparent areas instead of putting a white rectangle behind the picture. That makes it useful for an existing logo, product cutout or interface graphic that sits over a colored page. Partial transparency can remain around soft shadows and smoothed edges.
Check the saved WebP on both a light and a dark background. Conversion does not remove a background that was already painted into the PNG. A visible checkerboard inside the source is image content, not transparency that this tool can recover.
For the WebP trial, leave Quality at 92%. Lower it and compare small lettering, narrow lines and textured areas. This slider controls encoding quality; it is not a requested percentage reduction in bytes.
Some PNGs, especially simple graphics with few colors, already store efficiently. A WebP copy can be larger. Compare the actual files and keep the PNG if conversion offers no useful saving. The highest quality setting is not an explicit lossless mode, so keep the original for pixel-exact artwork.
The image is decoded and encoded on your device. Your PNG is not uploaded for this conversion. The page still loads code over the network, and a browser that cannot encode WebP itself may need to load an additional codec.
The tool checks the returned file type. If the browser produces a PNG instead of WebP, the local codec writes the WebP result. Phones and computers still need enough memory for the decoded picture; a very large PNG can fail even when its compressed file looks small.
The converter builds a new file from decoded pixels. It does not copy embedded PNG text notes, source metadata or an animation sequence into the result. Keep the original if those details matter to your workflow.
For later revisions, work from that master instead of repeatedly converting an already compressed copy. If you need a different width or height, use the separate Image Resizer. This page changes the image format and provides no dimension controls.
Open the converted asset in the site, editor or uploader that will use it. Check the crop, lettering and transparent edges there. If that destination requires PNG, retain the original rather than changing the WebP filename to disguise its format.
Conversion does not create a new banner or repair the contents of a product image. The linked Ultra HD Image Generator creates imagery from a brief, while Edit Image accepts instructions for changes to an existing picture. Finish those changes before making a web delivery copy.
Add the source image from your device. Use the original export when it is available.
Begin at 92% in Quality, then run Convert to WebP.
Inspect text and clear edges, compare file sizes, and test the WebP in its intended layout.
2 free downloads, 8 more after sign-in.
| This free tool | Paid AI tools |
|---|---|
| Re-encodes an existing PNG as a WebP image | Ultra HD Image Generator creates new imagery from a written brief |
| Offers a quality slider for the exported file | Edit Image can alter the source scene before WebP export |
| 2 free downloads, 8 more after sign-in. | Paid tools use their own displayed prices and access conditions. |
Choose a PNG, set Quality and press Convert to WebP. Review the resulting picture and save it as a separate asset so your source remains available.
Yes. This conversion retains clear and partly clear areas without applying the solid fill used for JPEG export. Inspect the edge colors over your intended page background before publishing.
It can. Output compression can change fine detail even though the pixel dimensions stay the same. Check the image at its intended display size and keep the PNG when exact pixels matter.
There is no explicit lossless setting here. The browser controls its native encoding behavior, and the fallback codec receives a quality value without enabling lossless mode. Do not treat the highest slider value as a pixel-exact guarantee.
Try the default of 92% first and examine the smallest letters and colored outlines. Raise quality if those edges change visibly. If the result still falls short, retain the original logo asset.
A simple PNG with few colors may already be compact, and the WebP encoder can produce more bytes. Try a lower quality value if the appearance remains acceptable, or use the original. A smaller result is not guaranteed.
No. Successful conversion uses the decoded source dimensions. There are no width or height fields on this page; choose the Image Resizer when you need to change the pixel size.
Yes. The image-processing path reads the selected file locally and encodes it in your browser. Network requests may load the page and processing code, but this conversion does not send the PNG to a server.
Use a current browser with the required image and canvas support. The tool includes a local fallback for browsers such as Safari that do not encode WebP natively. Large images can still exceed a phone’s available memory.
If the browser cannot write WebP itself, the tool loads a codec to do that work on your device. That extra code request is separate from the image, which remains local.
The export path writes the rendered image rather than copying the source file’s metadata. Preserve the PNG if you need its embedded notes, creation details or other source records.
No. This engine works with one decoded bitmap and exports a still picture. Use an animation-aware converter when all frames and their timing must be preserved.
Keep the PNG master. Fine text and hard pixel boundaries can show changes after compression, so compare them closely in the WebP copy. If exact pixel values are part of the artwork, use the original.
Create a WebP copy here, then add that file through your website’s usual image upload or publishing process. This converter prepares an asset; it does not turn a picture of a page into a functioning website.
The browser needs memory for the decoded image and working canvases, not just the compressed input file. Reduce the PNG dimensions or move WebP encoding to a device with more memory. There is no verified file-size limit that works on every device.
WebP is an image format for storing a picture with compression and optional transparency. This page produces a still WebP from your PNG. Open the exported file in its destination to confirm that the application accepts it.
Your first 2 downloads are free with no account. Sign in free for 8 more. Any paid Imagera plan makes downloads unlimited, and adds AI credits for the paid tools. Processing and the preview are always free.
Your first 2 downloads and every download on a paid plan have none. Free downloads 3 to 10, after sign-in, carry a small “Made with imagera.ai” badge in the corner. The result on screen is always clean.
Batch processing needs any paid Imagera plan; one file at a time is free.
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