WebP Converter
Convert PNG, JPG, WebP, GIF, BMP or SVG images to WebP.
Select images
Choose one or multiple images.
Conversion settings
Control image quality and dimensions.
Converted images
Preview and download your WebP files.
Use this WebP Converter to convert PNG, JPG, WebP, or SVG images into WebP format directly in your browser. You can adjust output quality and optionally limit the image width or height before downloading.
How It Works
The tool loads the image in your browser, optionally resizes it, and exports a new WebP image using the selected quality setting.
Lower quality can reduce file size, while higher quality generally preserves more image detail.
Example
Suppose you have a 4000 × 3000 JPG photo for a website.
You could set WebP quality to around 0.82 and limit the maximum width to 1200 px. The converter will resize the image while maintaining its proportions and create a WebP version for download.
Important Note
WebP supports both lossy and lossless compression as well as transparency. However, the output produced by this tool depends on your browser’s WebP encoding support and selected settings.
Converting an image does not automatically replace the original image on your website or update WordPress, CDN, or HTML image references. Preview the output and keep the original file when quality or future editing matters.
What WebP Provides
WebP supports lossy and lossless compression, transparency, and animation. This tool creates a static browser-encoded WebP. Savings vary with the source and settings; an already optimized JPG may shrink only slightly, while a photographic PNG may shrink considerably.
Resize for the Intended Display
Reducing pixel dimensions can save more bytes than changing quality alone. A camera image several thousand pixels wide is usually unnecessary in a modest content column. Choose dimensions that cover the largest real display size, including high-density screens when relevant, without sending far more pixels than the layout uses.
Keep the original aspect ratio unless deliberate cropping is required. Enlarging a small source creates additional pixels through interpolation but cannot restore detail that was never captured. Upscaling can make blur and compression artifacts more visible.
Quality and Visual Inspection
Lossy quality settings trade file size against visible fidelity. Lower values may create blocks, ringing near edges, softened texture, banding in gradients, or color smearing around text. The same number can behave differently across formats, browsers, and image subjects.
Test more than one setting on faces, fine texture, gradients, logos, and small high-contrast text. Inspect at the final display size and at 100% zoom. The correct result is the smallest file that still meets the destination’s visual requirements.
Practical Example
For a 4000 × 3000 blog photo, limit the width to the largest size the article displays and test quality near 80 as a starting point, not a rule. Compare a smaller and larger value before choosing.
Transparency and Backgrounds
PNG and WebP can store transparent pixels; JPEG cannot. When exporting a transparent source to JPEG, choose a background color that matches the destination. Otherwise a logo may display an unwanted rectangle. Inspect alpha edges on both light and dark backgrounds because antialiasing can reveal a fringe.
Metadata and Format Limitations
SVG input is rasterized at the selected size, so keep the vector original. Animation is not preserved through a normal static canvas export. Browser-canvas export may remove EXIF camera information, GPS coordinates, embedded thumbnails, color profiles, and other metadata. Keep the original whenever archival details, animation, vector structure, or professional color management matters.
Related Image Tools
Prepare composition with the Image Cropper, compare broader formats with Image Converter Pro, or test JPEG and WebP reduction with the Image Compressor.
Privacy and Browser Performance
Processing runs locally in your browser, and selected files are not intentionally uploaded to AjaxCalculators for server-side conversion. Use a trusted device for sensitive images and protect files saved to the Downloads folder.
Large images can consume substantially more memory after decoding than their compressed file size suggests. If a batch stalls, process fewer files together, reduce dimensions, or close other tabs. Mobile devices and low-memory computers may reach browser limits sooner.
Website Publishing Workflow
Downloading a new file does not update WordPress, HTML, CSS, a CDN, or responsive image references automatically. Upload the result, update every intended reference, preserve descriptive alternative text, and confirm that the server returns the correct content type. Add width and height attributes where appropriate to reserve layout space.
Test the finished page on phone and desktop. File format is only one performance factor; rendered dimensions, responsive sources, caching, lazy loading, and whether the image is initially visible also matter.
Quality-Control Checklist
- Open the downloaded file independently.
- Confirm dimensions, orientation, and aspect ratio.
- Compare file size and visible quality.
- Verify transparency or background color.
- Inspect text, faces, gradients, and sharp edges.
- Keep the source until publishing is confirmed.
Plan the Output Before Processing
Define where the new image will appear, its maximum rendered dimensions, whether transparency is required, and which browsers or applications must open it. A file for a product grid has different priorities from an archival master, printable graphic, email attachment, or social card. Starting with the destination prevents unnecessary resizing and repeated lossy exports.
When creating WebP for a responsive site, prepare more than one dimension if the layout serves different sizes. The browser should not download a desktop-sized image for a narrow mobile slot when a suitable smaller source is available.
Compare Results Consistently
Use the same crop and pixel dimensions when comparing formats or quality settings. Record the resulting file size and inspect the image on the intended background. A tiny saving is not worthwhile if it damages a logo, face, gradient, or small text. Conversely, sending a much larger file does not improve an image beyond the detail users can actually see.
Keep one untouched master and create named derivatives for publishing. Include useful subject or size information in filenames without exposing private data. After replacement, check caching, broken URLs, captions, attribution, structured data, and any page that reuses the asset.
Frequently Asked Questions
What files can I convert?
Upload PNG, JPG, WebP, or SVG images supported by the browser. SVG artwork is rasterized at the exported dimensions.
What quality should I use?
There is no universal value. Start with a moderate setting, compare alternatives, and choose the smallest acceptable result.
Does WebP support transparency?
Yes. Inspect transparent edges on both light and dark backgrounds.
Will metadata remain?
Not necessarily. Canvas export may remove EXIF, GPS, color-profile, and other metadata.
Does conversion update my website?
No. Upload the file and update the relevant CMS, HTML, CSS, or responsive image references.
Are images uploaded?
No. Conversion occurs locally, and the selected image is not intentionally uploaded to AjaxCalculators.