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Justools

Free, private browser tools for everyday tasks.

PDF tools

  • Merge PDF
  • Split PDF
  • Organize PDF
  • Rotate PDF
  • Delete PDF Pages
  • Add Page Numbers
  • Watermark PDF
  • Image to PDF
  • PDF to JPG
  • PDF to PNG
  • Remove PDF Password
  • Compress PDF
  • Protect PDF
  • PDF to Text
  • Crop PDF
  • Flatten PDF

Image tools

  • Image Converter
  • JPG to PNG
  • PNG to JPG
  • JPG to WebP
  • WebP to JPG
  • WebP to PNG
  • Image to WebP
  • Image Cropper
  • Lasso Crop
  • Remove Photo Metadata
  • SVG Optimizer
  • Resize Image
  • Compress Image
  • Remove Background
  • Image to Text

Developer tools

  • JSON Formatter
  • CSV to JSON
  • Hash Generator
  • Base64
  • URL Encode
  • Timestamp Converter
  • Diff Text
  • Case Converter
  • Word Counter
  • Color Contrast
  • Unit Converter

Utility tools

  • QR Code Generator
  • Trim Video
  • Merge Video
  • Screen Recorder
  • Voice Recorder

Creative tools

  • Coloring Pages
  • Graph Paper Generator
  • Spin the Wheel

Calculators

  • Cost of Raising a Child Calculator
  • Calorie Deficit Calculator
  • BMI Calculator
  • Age Calculator
  • Date Calculator
  • City Time Converter
  • Scientific Calculator
  • Fraction Calculator
  • Cost of Living (20 countries)
  • Budget Planner
  • Pay Raise Calculator

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  • All personal tools
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© 2026 Justools. General information only, not financial advice.

Image Converter

Convert between JPG, PNG, and WebP so your photos match what a site or app expects.

Creator and design gear

Photo & Graphic Design Essentials

Creator Deals

Upgrading your creative workflow? Shop top-rated drawing tablets, color-accurate monitors, and photo editing accessories on Amazon.

Explore Creator & Design Gear →*As an Amazon Associate, Justools earns from qualifying purchases.

Other useful tools

Free tools that often go together. Everything runs in your browser.

  • Image toolsJPG to PNGConvert JPG photos to PNG
  • Image toolsPNG to JPGConvert PNG images to JPG
  • Image toolsJPG to WebPConvert JPG photos to WebP
  • Image toolsWebP to JPGConvert WebP images to JPG
  • Image toolsWebP to PNGConvert WebP images to PNG
  • Image toolsImage to WebPConvert images to WebP

How to use this tool

  1. Add one or more JPG, PNG, or WebP images.
  2. Pick output format: WebP, JPG, or PNG. Adjust quality for JPG and WebP if needed.
  3. Download one converted image or a ZIP when you added multiple files.

Frequently asked questions

What does the image converter do?▾

It changes an image from one file format to another, for example turning a PNG screenshot into a smaller WebP file for a website, or converting a WebP photo into JPG for an app that only accepts JPEG. Formats differ in compression, transparency support, and compatibility, so switching formats can solve upload errors, shrink file size, or match what a platform expects. Everything runs on your device using the browser's built in image handling, with no software to install.

Who uses an image converter?▾

Bloggers and shop owners preparing photos for a website, developers testing how an app handles different file types, and anyone who received a WebP image from a phone or website and needs a JPG or PNG that older software or a specific upload form can open.

Which formats are supported?▾

Upload JPG, PNG, or WebP. Choose WebP, JPG, or PNG as the output format before you convert.

When should I choose WebP, JPG, or PNG?▾

WebP is usually the smallest choice for web use at a given quality. JPG has the widest support for photos, useful for email and older software. PNG is lossless and best when you need sharp edges, text, or transparency.

Why a ZIP for multiple images?▾

Browsers handle one download at a time, so converting several images at once is bundled into a single ZIP instead of many separate downloads.

Are my images uploaded?▾

No. Conversion reads and writes files entirely in your browser. Your photos are not stored on a server.

Does converting lose quality?▾

Converting to a lossy format like JPG or WebP re-encodes the image and can introduce small quality changes, especially at low quality settings. Converting to PNG is lossless, so no further quality is lost, though file size may grow.

Is there a file size limit?▾

There's no hard cap, but very large images or long batches can slow the tab on older phones. If the browser feels sluggish, convert fewer files at a time or resize huge camera originals first.

Processed locally in your browser. Your files are never uploaded to our servers.