About ConvertResize

Free tools that respect your privacy

Who We Are

ConvertResize is a collection of free online tools for working with images, audio, GIFs, and files. We believe essential digital tools should be free, fast, and respect your privacy - so we built them with no sign-ups, no watermarks, and no hidden costs.

Why We Built This

We were frustrated with existing online conversion tools that were slow, required uploading files to unknown servers, or came with hidden costs and watermarks. So we built these tools to work the way we wished they existed - fast, private, and truly free.

How It Works

Our file conversion and editing tools use modern web technologies like JavaScript, WebAssembly, and HTML5 APIs to process your files directly on your device - nothing gets uploaded to a server.

This covers all of our image, audio, and GIF tools - resizing, cropping, compressing, converting formats, editing GIFs, and more. Your files stay on your device throughout the entire process.

A few of our tools (like gaming ID lookups and YouTube Channel ID) do make server-side API calls to fetch public data from third-party services. These tools only send the username or ID you enter - never any files.

This approach means:

  • No File Uploads - Your images, audio, and GIFs are never sent to a server
  • Faster Processing - No upload/download waiting
  • No File Size Limits - Process files as large as your device can handle
  • No Queues - Never wait for server availability

Our Tools

Image Tools: Resize, crop, compress, split, create favicons, build collages, and convert between formats including PNG, JPG, WebP, HEIC, PDF, SVG, and DDS.

GIF Tools: Create GIFs from video, add text and captions, trim frames, compress file size, resize dimensions, and convert GIFs to video.

Audio Tools: Convert between MP3, WAV, OGG, and M4A, compress audio, boost volume, and extract audio from video files.

Gaming Tools: Look up player IDs for Minecraft, Steam, and Roblox. Design custom Roblox T-shirts, shirts, and pants with live 3D preview.

Utility Tools: Create password-protected ZIPs, convert ZIP formats, view file metadata, and more.

Works Everywhere

Our tools work on any device with a modern browser:

  • Mobile: iPhone, Android phones, Samsung Galaxy, Google Pixel
  • Tablets: iPad, Android tablets, Samsung Galaxy Tab, Surface
  • Computers: Windows, Mac, Linux, Chromebook
  • Browsers: Chrome, Firefox, Safari, Edge, Opera

How We Stay Free

ConvertResize is supported by ads. This allows us to keep the tools free for everyone. When you see ads on the site, you're helping support ongoing development and hosting costs - thank you!

Our Promise

  • Free forever - no premium tiers or paywalls
  • No accounts or logins required
  • No watermarks on your files
  • Privacy-first - file tools never upload your files to a server

Get In Touch

Have a suggestion, found a bug, or just want to say hi? Visit our Contact Page - we'd love to hear from you.