MiniPx — Free Image Compressor

Unlock with Pro

Built for people who ship images every day.

Same browser-based privacy. Same on-device processing. Pro just removes the limits and adds the production-grade controls.

Batch unlimited

Free is capped at 5 files per batch. Pro processes hundreds at once, queued and ZIP-packaged.

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Responsive sets

One input becomes 4 sizes (150 / 640 / 1280 / 2560). Built for web devs shipping <picture>.

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Multi-format export

AVIF + WebP + JPG + PNG simultaneously. Cartesian product with responsive sizes = up to 16 outputs per input.

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12 platform presets

One click for IG Post, Story, Reel, LinkedIn, X, FB, YouTube, WhatsApp, Email, Resume.

Watermark + rename

Text overlay with 9 anchor positions. Template-based filenames like {name}-{w}w.{ext}.

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Advanced codec

JPEG chroma 4:4:4 via mozjpeg, plus per-format quality overrides on every export.

Saved presets

Bundle your settings into one-click named profiles. Up to 20, saved in this browser.

AI background remover2 free · Pro

Cut out any subject on your device. Free is watermarked at 1080px; Pro is clean at 4096px.

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AI image upscaler2 free · Pro

Rebuild detail at 2× or 4×, nothing uploaded. Free takes 1080px in; Pro takes 4× more and drops the watermark.

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AI passport & visa photos2 free · Pro

18 government specs, sized exactly right either way. Pro adds print sheets, manual crop and no watermark.

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Upgrade to Pro

From $4.99/moor$59 lifetime $79Most popular

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Compress Images Online — Free, Private & No Upload Required

MiniPx is a free online image compressor that works entirely in your browser. Unlike traditional image compression tools that upload your photos to external servers, MiniPx processes everything locally on your device using the browser's Canvas API. Your images never leave your computer or phone — making it the most private image compressor available.

Whether you need to compress JPEG photos for email, reduce PNG file sizes for your website, or convert images to WebP for faster page loading, MiniPx handles it all. The smart multi-pass compression algorithm tries multiple quality levels automatically, finding the smallest possible file that still looks great. Most images see 50-70% file size reduction with no visible quality loss.

MiniPx also includes format conversion between JPEG, PNG, WebP, BMP, SVG, GIF, and TIFF. Resize images with preset widths (1920px, 1280px, 800px), crop passport-size photos, and strip EXIF metadata for privacy. All tools work with batch processing — the free tier compresses 5 files per batch and Pro removes that cap, with no daily quota, no monthly credits, and no watermark on either.

Need to compress images to a specific file size? MiniPx has dedicated tools for common requirements: compress to 50KB for Indian government forms, 100KB for exam applications and form uploads, or 200KB for profile photos and document portals. These tools are pre-configured with the optimal compression settings to hit your target size.

MiniPx is built with Next.js and runs on any modern browser — Chrome, Safari, Firefox, Edge — on desktop, tablet, or mobile. No app download needed, no account required, and it even works offline once the page has loaded. You can also install MiniPx as an app straight from your browser for one-click access.

How to compress images online

Open MiniPx: Go to minipx.com in any browser. No download or signup needed.
Add your images: Drag and drop images or tap to browse. Supports JPEG, PNG, and WebP, up to 200 MB each and 5 files per batch on the free tier.
Choose settings: Pick a compression level (Gentle, Smart, or Tiny), output format (WebP, JPEG, or PNG), and optional max width for resizing.
Compress: Click the Compress button. Processing happens instantly in your browser — nothing is uploaded.
Download: Save compressed images individually or download all as a ZIP file. Each file shows the before and after size.

Frequently asked questions

Is MiniPx really free?

Yes, with no hidden costs and no signup. Compression, conversion and resizing are unlimited, and compression output is never watermarked. Three limits worth naming plainly: the free tier compresses 5 files per batch (Pro removes the cap), the AI tools share 2 free runs between them before a cooldown starts, and free AI output carries a small watermark. On resolution, 1080px is an output cap for the background remover and passport photos, but an input cap on the upscaler — so a free 4x upscale still reaches 4320px. Pro lifts all three.

Do my images get uploaded to a server?

No. MiniPx processes everything in your browser using JavaScript and the Canvas API. Your images never leave your device. You can verify this by disconnecting from the internet — the tool still works perfectly.

What image formats does MiniPx support?

MiniPx supports JPEG, PNG, WebP, BMP, SVG, GIF, and TIFF as input formats and JPEG, PNG, and WebP as output. You can convert between formats freely — for example, BMP to JPG, SVG to PNG, TIFF to JPG, or GIF to JPG — all processed in your browser.

How much can MiniPx reduce my image size?

Typical compression reduces file size by 50-90% depending on the image and settings. The Smart preset (recommended) reduces most photos by 50-70% with no visible quality loss. The Tiny preset pushes reduction to 75-90% for strict size limits.

Can I compress images for government forms and job portals?

Yes. MiniPx has dedicated tools to compress images to specific sizes like 50KB, 100KB, and 200KB — common requirements for Indian government forms (Aadhaar, PAN, passport), UPSC applications, and job portal uploads.

Does MiniPx remove EXIF data from photos?

Yes. By default, MiniPx strips EXIF metadata including GPS location, camera details, and timestamps. This protects your privacy when sharing photos online. You can toggle this setting off if you want to keep metadata.

Can I compress multiple images at once?

Yes. The free tier compresses 5 files per batch and Pro removes that cap. Drag and drop your files, compress them all at once, then download individually or as a ZIP file. There is no daily quota on how many batches you run.

What is the difference between Gentle, Smart, and Tiny compression?

Gentle reduces file size by 20-40% with minimal quality change. Smart (recommended) reduces by 50-70% — the sweet spot for most uses. Tiny reduces by 75-90% for strict size limits like government form uploads.

Is MiniPx better than TinyPNG or Squoosh?

MiniPx processes images entirely in your browser, so your files never leave your device. TinyPNG and similar tools upload your images to their servers for processing. If privacy matters to you, MiniPx is the safer choice. MiniPx also works offline and has no daily quota or account requirement.

Can I use MiniPx on my phone?

Yes. MiniPx works on any device with a modern browser — iPhone, Android, iPad, or desktop. The interface adapts to your screen size automatically.

What else can MiniPx do besides compression?

MiniPx is a full image toolkit: AI background removal (on-device, privacy-first), passport photo maker covering 18 country/document specs, image crop, image rotate, format conversion (JPEG, PNG, WebP, AVIF, HEIC, BMP, GIF, TIFF, SVG), and resize. All run client-side in your browser — nothing uploads.

Is there a Pro tier?

Yes. MiniPx Pro ($4.99/month, $39/year, or $79 lifetime) adds unlimited batch processing, responsive image set generator (one input → 4 sizes × 4 formats = 16 outputs), multi-format export (AVIF, WebP, JPG and PNG simultaneously), bulk watermarking with 9 anchor positions, saved compression presets, 6 batch rename templates, and 4K AI background removal. The free tier is real and not crippled — most users never need Pro.