Image Size Reducer

Reduce image size. Keep the quality.
Fast, private, batch image compression that runs entirely in your browser.

Features · Quick start · Deploy · Privacy · Contributing · Creators

flowchart LR
  A[Drop or pick images] --> B[Validate and queue]
  B --> C[Web Worker compresses<br/>3 at a time]
  C --> D[Measure real output size]
  D --> E[Download single or ZIP]

Good to know: quality applies to JPEG and WebP. PNG stays lossless in browsers, so pair PNG with WebP output or a smaller size. Animated images are flattened to one frame, and metadata is removed on export. AVIF is not offered because browsers cannot encode it reliably through Canvas.

git clone https://github.com/Itz-Anya/Image-Size-Reducer.git
cd Image-Size-Reducer
npm install
npm run dev

1. Import the repository in Vercel.
2. Keep the detected SvelteKit preset (uses @sveltejs/adapter-vercel).
3. Deploy. No environment variables or backend are needed.

SvelteKit 2 · Svelte 5 (runes) · TypeScript · Tailwind CSS 4 · Lucide Svelte · browser-image-compression · JSZip · Bricolage Grotesque and Geist fonts

src/
├── app.css                 design tokens and base styles
├── app.html                icons, theme colors, early dark-mode script
├── lib/
│   ├── queue.svelte.ts     queue, settings, compression, ZIP
│   └── utils.ts            formatting, filenames, saving files
└── routes/
    ├── +layout.svelte      header, footer, SEO and social meta tags
    ├── +layout.ts          prerender
    └── +page.svelte        workspace, features, about, creators
static/
└── logo.png

Your images never leave your device. They are decoded and compressed locally, with no upload, no server and no image analytics. Image contents are never stored. Only your theme and compression settings are saved in localStorage. The code is public, so you can verify it.

Contributions are welcome.

1. Fork the repo and create a branch: git checkout -b feature/my-change
2. Make your change and run npm run check
3. Open a pull request describing what and why

Ideas that would be great additions: before/after slider, pause and resume, per-image settings, grid/list toggle, multi-select.

𝜜ɴყꫝㅤ𓆩💗𓆪

𝐌 𝐔 𝐑 𝚨 𝐋 𝐈 𓂃ִֶָ⋆.˚

Released under the MIT License. © 2026 Image Size Reducer. Built by Murali and Anya.