One binary. 25 tools.

JustOptimize

Images

Let the smallest format win.

Tries real PNG, WebP, and JPEG encodes, then picks the smallest useful result. Transparent images stay transparent. Handy when you want a lighter image without guessing the format.

JustResize

Images

Make it the right size.

Fits an image inside your chosen dimensions while keeping its proportions. Set a width, a height, or an exact crop. Smaller images stay small unless you ask to upscale.

JustCrop

Images

Lose the empty edges.

Trims transparent space around the visible artwork. For a folder of animation frames, shared bounds give every frame the same canvas so the subject stays in place.

JustRMBG

Images

Keep the subject. Drop the background.

Cuts out a subject with local BRIA RMBG-2.0 inference and saves a transparent PNG. Auto mode prefers acceleration and reports when it needs CPU support or a fallback.

JustJPG

Images

A JPEG ready for the web.

Creates a progressive JPEG with sensible quality settings and optimized encoding. Transparent inputs get a white background, or a color you choose. The original stays beside the result.

JustPNG

Images

Put that PNG on a diet.

Runs PNGs through pngquant to reduce their size. Use it on one image or a folder, with an output directory when you want to keep the originals alongside the optimized copies.

JustWebP

Images

Smaller images, familiar format.

Converts still images to compact WebP files for websites and apps. Choose a separate output folder to keep a full set of originals while you prepare the web versions.

JustAVIF

Images

Give your photos the AVIF treatment.

Encodes opaque still images as AVIF with adjustable quality and speed. It checks the resulting size before removing a source, and refuses inputs whose transparency or animation would be lost.

JustVideo

Audio & video

Get the clip ready to share.

Turns a local video or a media URL into a streaming-ready H.264 MP4. Pick a resolution from 480p through 4K, or keep the source dimensions. It never upscales the video.

JustAudio

Audio & video

Take the sound with you.

Extracts a video's soundtrack or converts an audio file to compact AAC/M4A. Media links work too: yt-dlp downloads the source, then the same audio settings do the conversion.

JustMP3

Audio & video

An MP3 for almost anything.

Creates a high-quality MP3 from audio, video, or a media URL. Useful for a soundtrack you want to listen to, or a recording that needs to play on a wider range of devices.

JustWAV

Audio & video

Bring it into your editor.

Converts audio or a video's soundtrack to an editing-ready WAV. It also accepts media URLs when the recording you need lives online. You get an uncompressed file for the next step.

JustJSON

Documents & data

Make sense of the curly brackets.

Formats messy JSON, validates a file, or pulls out one nested value. Minify it for transport or sort the keys for a cleaner diff. Piped input prints the result straight to stdout.

JustPDF

Documents & data

The PDF jobs, in one command.

Inspect, merge, split and compress PDFs, or pull out the pages, images and links you need. It rotates pages too. Input PDFs are always kept intact.

JustLinks

Documents & data

Find the links buried in your files.

Collects unique links from PDFs, Office documents, and text files. CSV output includes each link's title and where it appeared. Different YouTube URL shapes collapse to one video link.

JustSVG

Documents & data

Clean up the vector file.

Optimizes SVGs with a Rust-native, SVGOMG-style engine. Its conservative preset preserves the viewBox and IDs, along with titles and accessibility attributes that the surrounding page may rely on.

JustQR

Documents & data

Turn a link into a scan.

Makes a QR code from a URL or any text. Save a PNG, choose SVG for a scalable version, or draw it right in the terminal. Size, colors, and error correction are adjustable.

JustPaste

Files & clipboard

Give your clipboard somewhere to land.

Saves whatever you copied: images as PNG, files, links, even a Git repo cloned into its own folder. Paste it as Markdown, HTML, JSON, OCR text, an MP3 or an MP4 instead. On Windows, Ctrl+V in Explorer does it for you.

JustZip

Files & clipboard

Zip the project, skip the clutter.

Archives files, folders, or a mixed selection. Git working trees honor their ignore rules, so the ZIP leaves out the usual build clutter. Ordinary folders work without Git and include their contents recursively.

JustPorts

Development

Where did that dev server go?

Shows running development servers with their project details and lets you open them in a browser. It remembers discovered servers, with launch recipes for bringing a stopped project back later.

JustPort

Development

Find who's sitting on that port.

Looks up a local port's listener and the process behind it. Get a readable answer in the terminal or JSON for a script. An explicit kill option can stop a revalidated, same-user process.

JustIP

Development

See the address the internet sees.

Reports your public IPv4 and IPv6 addresses together. A missing public route is shown as unavailable. Plain text and JSON output make it easy to use the answer in a script.

bunt

Development

Get a handle on stray processes.

Inspects Node, Bun, and Python workloads in an interactive process view. Protect the jobs you want to keep, then stop a selected workload or the revalidated set of unprotected processes.

JustCommit

Development

Give the diff a good commit message.

Uses a bounded summary of your changes to write a commit message through OpenRouter. It can create the commit and optionally push. Use --staged to keep it scoped to your current index.

JustReady

Setup

Set up the next machine.

Opens a curated software picker filtered for your operating system. Installed apps are marked, and dependencies join the plan. Review the exact install commands before letting native package managers do the work.