JPG to WebP Converter: Free, Private, No Upload

Convert JPG files to WebP in your browser. Smaller output file, batch up to 20 files at once, no upload, no account, no watermark. Your files never leave your device.

JPG to WebP
Batch up to 20 files
No upload, no account
Metadata stripped

1Add up to 20 images
2Pick from 18 formats
3Download or copy the code

Processed on your device. Your images are never uploaded, and metadata is stripped. How we keep it private

How do I convert JPG to WebP for free?

Drop your JPG files into the tool above, choose WebP as output, and download the result. Everything runs in your browser, so nothing is uploaded and there is no limit or watermark. It works on Windows, Mac, Linux, ChromeOS, iOS and Android — anywhere you have a modern browser.

Price: Free, no credits and no daily cap
Account required: No
File uploaded to server: No, processed locally in your browser
Batch limit: Up to 20 files at once
Input format: JPG
Output format: WebP
Best for: WebP workflows, smaller files, faster sharing
Works on: Chrome, Edge, Firefox, Safari, iOS and Android browsers
Privacy: No upload, no tracking, metadata stripped
Output quality: Adjustable 1-100, defaults to 90

How to convert JPG to WebP

1
Drop your JPG files
Drag up to 20 JPG files onto the page or click to choose them. Everything runs in your browser.
2
WebP is preselected
Output is already set to WebP. Adjust quality, resize or batch if you want.
3
Download
Save each WebP, or download all of them together as a ZIP.

JPG to WebP: what changes and when it makes sense

JPG is a Joint Photographic Experts Group format. It is best known for small files for photographs and near-universal compatibility. The main drawbacks are no transparency, visible blocking at low quality, and quality that drops every re-save.

WebP is a WebP format, developed by Google. It is best known for smaller files than JPG and PNG at similar quality, with transparency and animation in one format. The main drawbacks are rejection by some upload forms, older editors and email clients, and no wide-gamut or HDR support.

JPG vs WebP at a glance

Property	JPG	WebP
Type	Raster image	Raster image
Compression	Lossy (DCT based, with chroma subsampling)	Lossy (VP8) or lossless, chosen per file
Transparency	None	Full alpha channel with soft edges
Animation	No	Yes
Colour depth	8 bits per channel (24-bit colour)	8 bits per channel
Support	Opens in every browser, operating system, camera, editor and print service	Supported by current Chrome, Edge, Firefox, Safari and Opera, but not by every older editor, office suite or upload form
History	Created in 1992 by the Joint Photographic Experts Group and standardised as ISO/IEC 10918. It became the default image format of the early web because it offered photographic compression when storage was expensive. Still the most widely used photo format 30+ years later.	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.

What actually changes in this conversion

Both JPG and WebP use lossy compression, so this adds a second round of loss. Use a high quality setting (90 or above).
JPG has no alpha channel, so every pixel is already opaque.
Expect the WebP file to be somewhat smaller than the JPG source.
EXIF, GPS and camera data are stripped on every conversion. That is good for privacy, but you lose capture dates.

About JPG: history and technical details

Created in 1992 by the Joint Photographic Experts Group and standardised as ISO/IEC 10918. It became the default image format of the early web because it offered photographic compression when storage was expensive. Still the most widely used photo format 30+ years later.

Technical: 8x8 block Discrete Cosine Transform with 4:2:0 chroma subsampling by default. Baseline supports 8-bit per channel. Progressive loads in waves. Maximum dimensions 65,535 by 65,535 pixels. Maximum 16.7 million colours.

Real-world size: A 12-megapixel photo at quality 85 is typically 2-4 MB. The same photo as PNG is 18-25 MB, as BMP is 36 MB. JPG is 60-80% smaller than PNG for photographs.

Popular tools: Adobe Photoshop, GIMP, Affinity Photo, Lightroom, macOS Preview, Windows Photos, ImageMagick, FFmpeg.

Alternatives: WebP (25-35% smaller), AVIF (30-50% smaller), HEIC (50% smaller, Apple only), PNG (lossless, 5-10x larger).

About WebP: what you get

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).

Browser and software compatibility

JPG: Opens in every browser, operating system, camera, editor and print service. WebP: Supported by current Chrome, Edge, Firefox, Safari and Opera, but not by every older editor, office suite or upload form.

WebP is well supported by current browsers but still gets rejected by some editors and upload forms.

Why people move away from JPG

JPG cannot store transparency, so logos, cut-outs and interface assets need another format.
Every re-save of a JPG throws away more detail, a problem for images edited repeatedly.
Sharp edges and text show ringing artefacts in JPG, and newer codecs give smaller files at the same visual quality.

Why people choose WebP

Lossy WebP is commonly 25 to 35 percent smaller than JPG at similar visual quality, which helps Core Web Vitals.
One format covers photographs, transparent graphics and short animations.
Lighthouse and other performance audits recommend modern formats like WebP.

Common mistakes with JPG

Re-saving a JPG multiple times compounds quality loss — always keep the original
Using JPG for logos with text causes visible ringing around letters
Setting quality above 95 rarely improves visual quality but enlarges files

Common JPG to WebP scenarios

Faster pages: Swapping JPG hero images for WebP typically trims 25-35% off file size and helps Largest Contentful Paint.
CMS and store uploads: WordPress and Shopify both accept WebP, and many themes already serve it.
Bandwidth limits: Smaller images matter on mobile connections.
Core Web Vitals: WebP helps meet LCP targets on image-heavy pages.

Best practices for keeping quality

If you still have the original camera file, convert from that. A JPG already compressed hard has little detail left to preserve.
Quality 75-85 is a good default for photographs. Use lossless WebP for screenshots and interface graphics.
If you serve visitors on very old browsers, test there and keep a JPG or PNG fallback.
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.

JPG to WebP questions

Quick answers about privacy, quality, supported formats, file limits and how WebP works.

How much smaller is WebP than JPG?

Lossy WebP at quality 80 is typically 25-35% smaller than JPG at quality 85 for photographs. For graphics and screenshots, WebP lossless is 20-30% smaller than PNG.

Will older browsers display WebP?

Safari 14+ (2020), Chrome, Edge and Firefox all support WebP. Very old Safari (pre-2020) needs a JPG fallback. Use the <picture> element with a JPG fallback for maximum compatibility.

Is WebP good for SEO?

Yes. Smaller images mean faster page loads, which improves Core Web Vitals (LCP especially). Google explicitly recommends modern formats like WebP for web performance.

Why convert JPG to WebP?

WebP files are typically smaller than JPG, which makes them faster to share, send and load. The trade-off is a small amount of image detail at low quality settings.

Will converting JPG to WebP lose quality?

At 90% quality, most people cannot tell the difference. Use 85-95% for photos and you are fine.

Does WebP keep transparency?

Yes. WebP supports full transparency, so transparent areas in your original are kept.

Are my files uploaded?

Never. Everything runs in your browser. Your files never leave your device. Open DevTools Network tab while processing — you will see no upload request.

Can I convert many files at once?

Yes, up to 20 files at once. Download them individually or all together as a ZIP.

Does the converter strip metadata?

Yes. Browsers do not pass EXIF data through a canvas, so GPS, camera model and dates are removed on every conversion. That is good for privacy.

Is it free?

Yes. No credits, no daily cap, no account, no watermark. The practical limit is your device memory.

Is WebP better than JPG?

For web delivery, yes. WebP is 25-35% smaller than JPG at similar visual quality and supports transparency and animation. JPG is still better for universal compatibility with older software.

Can WebP be animated?

Yes. Animated WebP is supported in all modern browsers and produces smaller files than animated GIF. It is one of three web formats supporting animation (GIF, WebP, AVIF).

Does WebP support transparency?

Yes. WebP supports full alpha transparency, including soft shadows and anti-aliased edges, in both lossy and lossless modes.

Your files never leave your device

No upload, no account, no tracking. Everything happens in your browser using the Canvas API and WebAssembly. You can confirm this in your browser's DevTools Network tab while the tool runs — no request carries your file. See why ToolDeck is different.