Kostenloses Online-Tool

Resize Image Online

Resize images to exact pixels or percentage. Fast, secure, and completely free — no signup required.

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So verwenden Sie Image Resizer

Done in three simple steps — no account needed.

01

Upload your image in JPG, PNG, or WebP format.

02

Enter target width, height, or percentage scale.

03

Enable aspect ratio lock to avoid stretching.

Warum Image Resizer verwenden?

  • Exact pixel dimensions for any workflow
  • Aspect ratio lock prevents distortion
  • High-quality downscaling interpolation
  • Optional output format and quality control
  • Free unlimited resizing
  • Pairs with compressor and upscaler tools

Perfekt für

  • Blog featured image dimension compliance
  • App icon and favicon size generation
  • Email and intranet photo sizing
  • Thumbnail creation for galleries

01What is Image Resizer?

ImgifyTools Image Resizer scales photos to exact pixel dimensions or percentage sizes for web thumbnails, email signatures, app assets, and print-adjacent workflows—without the quality loss of careless stretch handles in presentation software. Enter target width and height, lock aspect ratio to prevent distortion, or crop to fit when converting landscape masters to square avatars. Bloggers generate 1200px-wide featured images from DSLR originals. Developers export multiple icon sizes from one master PNG. HR resizes headshots for intranet directories. Optional compression after resize hits byte budgets. Unlike social-specific presets in our platform resizer, this general tool accepts arbitrary dimensions for custom design systems. Free, browser-based, unlimited resizing with instant preview.

03How it works

Upload source image; specify width, height, or scale percentage. Resampling kernel uses high-quality interpolation—Lanczos or bicubic equivalents—for downscaling photographic content. Aspect ratio lock adjusts the dependent dimension automatically when you change one side. Upscale requests may warn when exceeding source pixels; pair with AI upscaler for enlargement needs. Output format selectable among JPG, PNG, WebP with quality controls. EXIF orientation normalized. Processing instant for web-scale dimensions.

04Common use cases and tips

Resize blog heroes to exact theme specifications—often 1200×630 or 1600×900. Create favicon and app icon sizes from square logo masters. Downscale 4K phone photos before email to respect attachment limits. Never upscale small logos for print—request vector sources instead. Chain resize then compress for optimal CMS uploads. Use social media resizer when platform presets beat manual pixel lookup.

ImgifyTools vs iloveimg

See how our free image resizer compares to iloveimg on price, limits, and features.

Feature

ImgifyTools

iloveimg

Price

Free resizing

Free with ads; premium available

Preset sizes

Social and platform presets built-in

Common size presets

Custom dimensions

Exact pixel width and height

Custom width/height

Aspect ratio lock

Maintain proportions option

Lock aspect ratio

Batch resize

Platform and bulk tools

Batch on premium

Output quality

Quality slider available

Standard compression

Format output

JPG, PNG, WebP

Multiple formats

02How to resize image online?

01

Upload your image in JPG, PNG, or WebP format.

02

Enter target width, height, or percentage scale.

03

Enable aspect ratio lock to avoid stretching.

04

Preview resized output dimensions and quality.

05

Download the resized image in your chosen format.

Why use Image Resizer?

Unlike many other platforms that compromise on quality or hide results behind paywalls, ImgifyTools offers high-fidelity output with a focus on speed and user privacy. No account creation is required to start transforming your images.

Exact pixel dimensions for any workflow
Aspect ratio lock prevents distortion
High-quality downscaling interpolation
Optional output format and quality control
Free unlimited resizing
Pairs with compressor and upscaler tools

Perfect For...

Blog featured image dimension compliance
App icon and favicon size generation
Email and intranet photo sizing
Thumbnail creation for galleries

Related guides

Resize image online — GuideResize Images for Social Media — Complete Guide

Frequently Asked Questions

Everything you need to know about the Image Resizer.

Downscale safe; upscale limited—use image upscaler for AI enlargement.
Lock aspect ratio when changing one dimension.
Platform resizer or bulk workflows for many files.
Preserved when outputting PNG.
JPG for photos; PNG for graphics with transparency.
Resize pixels; set DPI in print software separately.
Very large outputs supported; browser download limits rare.
Use social media resizer for platform-specific sizes.

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