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Resize images online

Change image dimensions to any size. Supports all formats. Free and private.

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Open Image Resizer →

Choose from 1920px, 1280px, or 800px max width

Resize Image Online — Free, Fast & Private

Whether you need to resize photos for a website, social media, email, or document upload, MiniPx makes it fast and simple. Set a maximum width and MiniPx automatically scales the image proportionally — no distortion, no cropping, aspect ratio always preserved.

MiniPx offers three preset sizes: 1920px (full HD, ideal for websites and presentations), 1280px (great for email, social media, and general sharing), and 800px (compact, ideal for form uploads, thumbnails, and government portals). You can also combine resizing with format conversion and compression in one step.

For web developers, resizing oversized images is one of the most impactful performance optimisations. A 4000px wide photo displayed at 800px on your website wastes bandwidth on pixels that are never seen. Resizing to the actual display dimensions can reduce file size by 80% or more.

For social media, each platform has recommended dimensions: Instagram (1080px), Facebook (1200px), Twitter/X (1200px), LinkedIn (1200px). Setting max width to 1280px produces images that look sharp on all these platforms while keeping file sizes manageable.

All resizing happens in your browser. Your images are never uploaded to any server, making MiniPx safe for confidential documents, personal photos, and professional images.

How it works

  1. Upload your image: Add the image you want to resize. Supports JPG, PNG, and WebP.
  2. Choose max width: Select 1920px, 1280px, or 800px depending on your needs.
  3. Optional: change format: Convert to WebP, JPEG, or PNG during the resize for additional savings.
  4. Download resized image: Save the resized file — aspect ratio is preserved automatically.

Frequently asked questions

Does resizing change the aspect ratio?
No. MiniPx scales images proportionally. If you set max width to 1280px, a 4000x3000 image becomes 1280x960 — same ratio, smaller dimensions. There is no distortion or stretching.
Can I resize images without losing quality?
Reducing dimensions does not degrade quality — you are removing pixels, not degrading them. A 4000px image resized to 1280px looks identical at screen viewing size. Quality loss only occurs with heavy JPEG/WebP compression, not resizing.
What max width should I use?
1920px for websites and presentations, 1280px for email and social media, 800px for form uploads, thumbnails, and government portals. When in doubt, 1280px is a safe general-purpose choice.
Can I resize and compress at the same time?
Yes. MiniPx resizes and compresses in one step. This is the most effective way to reduce file size — combining dimension reduction with quality compression can achieve 90%+ file size reduction.
Can I resize images for social media?
Yes. Use 1280px max width for a size that works well on Instagram, Facebook, Twitter/X, and LinkedIn. For Instagram Stories/Reels, the ideal dimensions are 1080x1920 (9:16 ratio).
Can I resize multiple images at once?
Yes. Add multiple images and they will all be resized to the same max width. No file count limits. Download all resized files individually or as a ZIP.
How do I resize an image to a specific pixel size?
MiniPx uses max width presets (1920, 1280, 800px) that scale proportionally. For exact square dimensions like 500x500, resize here first, then use the MiniPx image cropper at /crop-image/ with a 1:1 aspect ratio. Both steps run in your browser — no upload at either.
Does MiniPx resize images on my phone?
Yes. MiniPx works in any mobile browser — iPhone, Android, tablet. Open minipx.com, upload from your camera roll, choose dimensions, and download the resized image. No app needed.

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