Free tool · WebP Converter

WebP Converter: smaller images, made in your browser

Turn JPG and PNG images into light WebP files, resize them in the same step and get SEO-friendly file names. Your images never leave your device.

Private by design. Images are converted on your device and never uploaded to Grixhub or any server.

your-images.webpReady

Your WebP images will show here. Nothing is uploaded.

Before you upload: give each image a short, descriptive name and write alt text that says what it shows.

Smaller images help pages load faster. They don’t guarantee rankings on their own.

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What you get

What you get

Smaller WebP files

Convert JPG, PNG or WebP images in one batch.

Before and after sizes

See how much smaller each image got.

Resize in one step

Pick a max width. The aspect ratio stays the same.

SEO-friendly names

Lowercase names with hyphens that you can edit before you download.

How to use

Step by step

  1. 1

    Add your images

    Drop up to 20 JPG, PNG or WebP files.

  2. 2

    Pick a quality

    80 for photos, 90+ for text and logos.

  3. 3

    Set a max width

    Match the largest size your page shows.

  4. 4

    Check the results

    Compare sizes and rename each file.

  5. 5

    Download and add alt text

    Upload to your site and describe each image.

Guide

What WebP is, honestly

1

A modern format from Google

WebP supports lossy and lossless compression, and transparent backgrounds.

2

Usually smaller

Google reports WebP lossless images are 26% smaller than PNGs, and lossy WebP images are 25–34% smaller than comparable JPEGs.

3

Works in every major browser

Current versions of Chrome, Edge, Firefox and Safari all show WebP images.

4

Not a ranking trick

Smaller images help speed. Rankings still depend on content, links and much more.

Why it matters

Why it matters for your business

Pages show up faster

Images are often the heaviest part of a page. Smaller files help the main image appear sooner on mobile.

Less data for visitors

People on mobile data load less, which helps when the signal is weak.

Better image SEO

Clear file names and alt text help search engines understand what each image shows.

When to use

When to use it

1

Before you upload new photos

2

When PageSpeed Insights flags large images

3

When you launch or redesign your site

4

When phone photos are several MB each

Who it’s for

Who it’s for

  • Site owners who upload their own photos
  • Bloggers and content teams
  • Online shops with many product photos
  • Clinics, hotels and restaurants with photo-heavy pages
  • Developers who need a quick batch convert
  • Marketers fixing PageSpeed warnings

Common mistakes

Mistakes to avoid

Uploading full-size phone photos

Fix: Resize to the width your page shows, often 1200–1920 px.

Setting quality too low

Fix: Start at 80 and check faces, text and edges.

Blurry logos and screenshots

Fix: Use 90+ quality, or keep logos as PNG or SVG.

Camera names like IMG_4821

Fix: Use short, descriptive names with hyphens.

Skipping alt text

Fix: Write a short description of each image when you upload it.

Converting the same WebP again and again

Fix: Always start from the original file.

Worked example

Example: a café menu photo

Before

IMG_4821.JPG straight from a phone: 4032 × 3024 px and about 3.8 MB.

→
After

iced-latte-ari-cafe.webp at 1200 × 900 px and quality 80, a fraction of the original size, with the alt text “Iced latte on a wooden table at a café in Ari”.

Illustrative example.

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Honest limits

What this tool can’t do

  • It doesn’t fix slow hosting, heavy scripts or fonts.
  • It doesn’t upload images or swap them on your site for you.
  • Animated images become a single still frame.
  • Photo data such as camera details and GPS location is removed, and colors in wide-gamut photos may shift slightly.
  • Safari, and browsers on iPhone and iPad, may not be able to create WebP files.

FAQ

Questions, answered simply

What is a WebP converter?

A WebP converter turns JPG, PNG and other images into WebP, a format that is usually smaller at similar quality. This one runs fully in your browser.

Are my images uploaded anywhere?

No. Your browser reads, converts and saves the images on your device. Nothing is sent to Grixhub or any server.

What quality should I use?

Start at 80 for photos. Use 90 or higher for logos, screenshots and images with text, then compare the result with the original.

How wide should images on my website be?

Most site images look sharp at 1200 to 1920 px wide. Product and card images are often fine at 800 px. Match the largest size your theme shows.

Do all browsers show WebP images?

Yes. Current versions of Chrome, Edge, Firefox and Safari all display WebP images.

Does converting images to WebP help SEO?

Indirectly. Smaller images help pages load faster, and descriptive file names and alt text help Google understand your images. It does not guarantee rankings.

Why is my WebP file bigger than the original?

It can happen when the original is already well compressed or the quality is set very high. Lower the quality, or keep the original file.

Does it keep transparency and photo data?

It keeps transparent backgrounds from PNG files. It removes photo data such as camera details and GPS location.

Why doesn’t it work on my iPhone?

Safari, and every browser on iPhone and iPad, may not be able to save WebP files yet. Use Chrome, Edge or Firefox on a computer instead.

Is it free?

Yes. The WebP Converter is free, with no sign-up and no card.

A tool from the Grixhub team in Bangkok

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