How to Resize Images Quickly: A Step-by-Step Guide

Best Tools for Image Resize in 2025Resizing images is one of the most common tasks for photographers, designers, web developers, and everyday users. In 2025 the demand for efficient, high-quality image resizing continues to grow as image-heavy websites, mobile apps, and AI-powered workflows expand. This article reviews the best tools for image resize in 2025, organized by use case: quick single-image edits, batch processing, command-line automation, web and developer APIs, and tools that preserve or enhance quality using AI upscaling and content-aware resizing.


What to look for in an image-resize tool

Before diving into specific products, here are factors to consider when choosing a tool:

  • Output quality: how well the tool preserves detail and minimizes artifacts when scaling up or down.
  • Speed and performance: important for batch jobs and large images.
  • File format support: JPEG, PNG, WebP, AVIF, HEIC, TIFF, PSD, and RAW.
  • Batch processing & automation: bulk resizing, scripting, CLI, or API.
  • Resampling algorithms: bicubic, Lanczos, nearest-neighbor, AI-driven super-resolution.
  • Preserve metadata & color profiles: EXIF, IPTC, ICC profiles.
  • Compression & optimization: choose output quality vs file size, lossless or lossy options.
  • Platform & integrations: macOS/Windows/Linux, mobile apps, web UIs, plugins for Photoshop, Figma, and CMS integrations.
  • Cost & licensing: free/open-source vs paid SaaS or desktop apps.
  • Privacy & local processing: whether images are processed locally or sent to cloud servers.

Best single-image and quick-edit tools

Adobe Photoshop (Desktop + Cloud)

Photoshop remains a go-to for professionals needing precise control. Its “Image Size” dialog supports multiple resampling algorithms (Preserve Details 2.0 for upscaling), metadata handling, and ICC profile conversion. Photoshop’s export options (Export As/Save for Web) provide fine control over quality and format (including WebP via updates or plugins).

Pros:

  • Industry-standard controls and color management.
  • Powerful content-aware scale and retargeting features.
  • Excellent for mixed raster/vector workflows.

Considerations:

  • Subscription cost; heavier than simple tools.

Affinity Photo (Desktop)

Affinity Photo offers robust resizing, high-quality resampling, and full color profile support at a one-time price. It’s a strong Photoshop alternative for users who prefer local, perpetual-license software.

Pros:

  • Fast, affordable one-time purchase.
  • Raw editing and ICC support.

Pixelmator Pro (macOS)

Pixelmator Pro blends a modern UI with strong resizing options and macOS optimization. It supports ML Super Resolution for upscaling and integrates well with macOS color management.

Pros:

  • Native macOS performance, attractive UI.
  • Good machine-learning upscaling.

Best batch-processing and workflow automation tools

ImageMagick (CLI, cross-platform)

ImageMagick is the most flexible command-line tool for batch resizing, conversion, and scripted image manipulation. It supports virtually every format, offers a comprehensive set of filters, and is ideal for automation in server environments.

Example command:

magick mogrify -resize 1200x800 -quality 85 -path output/ *.jpg 

Pros:

  • Extremely powerful and scriptable.
  • Free and cross-platform.

Considerations:

  • Command-line learning curve; default algorithms can be tuned for quality.

graphicsmagick (CLI)

A fork of ImageMagick optimized for speed and stability. Suited when performance and lower memory usage matter for large batch jobs.

FastStone Photo Resizer (Windows)

User-friendly GUI for batch resizing, renaming, and format conversion on Windows. Good for non-technical users handling large photo sets.


Best web-based and mobile tools

Squoosh (Web)

Squoosh is a lightweight, browser-based tool that lets you resize and convert images client-side (no upload required). It supports modern formats (WebP, AVIF), offers visual comparisons, and is great for quick web optimization tasks.

Pros:

  • Runs fully in-browser with local processing.
  • Supports modern codecs and interactive comparisons.

TinyPNG / TinyWebP (Web API)

TinyPNG/TinyWebP compress and resize images with excellent results for web use. They provide developer APIs and plugins for CMS platforms.

Considerations:

  • Cloud-based (images are uploaded); there are privacy considerations for sensitive images.

Photos, Files apps (iOS/Android)

Mobile OS-level edits now include quick resize and export workflows; third-party apps like Resize Image (Android) and Image Size (iOS) cover simpler needs.


Best developer APIs and cloud services

Imgix / Cloudinary / ImageKit

These CDN-backed image platforms provide dynamic on-the-fly resizing, format negotiation (WebP/AVIF), and optimization features. They integrate with CDNs and are ideal for websites and apps needing responsive images without generating multiple files.

Comparison table:

Feature Cloudinary Imgix ImageKit
On-the-fly resizing Yes Yes Yes
Format conversion (WebP/AVIF) Yes Yes Yes
CDN integration Built-in Built-in Built-in
Transformation URLs Yes Yes Yes
Free tier Yes (limited) Limited Yes (limited)

These services reduce engineering overhead by delivering correctly sized images per device and viewport automatically.


AI-driven upscaling and quality-preserving tools

Topaz Gigapixel AI

Topaz Gigapixel AI remains a leading desktop tool for high-quality upscaling using machine learning models trained on many images. It excels at enlarging photos with detail restoration and artifact suppression.

Pros:

  • Best-in-class upscaling quality for many photo types.
  • Batch processing support.

Considerations:

  • Desktop-only and can be resource-intensive.

Adobe Super Resolution (Camera Raw / Lightroom)

Adobe’s Super Resolution leverages AI to double pixel dimensions with good preservation of detail, integrated smoothly into Lightroom and Camera Raw workflows.

Waifu2x / ESRGAN-based tools

Open-source models like Waifu2x (originally for anime-style images) and ESRGAN variants are useful for niche needs and custom pipelines; often used via community GUIs or integrated into automated workflows.


Format-specific and optimization considerations

  • Use WebP or AVIF where supported for smaller file sizes at comparable quality; fall back to JPEG/PNG for compatibility.
  • For responsive websites, generate multiple sizes and use srcset or rely on CDN on-the-fly resizing.
  • When downscaling photographs, Lanczos or bicubic often give good results; for upscaling, AI super-resolution outperforms classical algorithms in many cases.
  • Preserve color profiles if color-critical; strip metadata only when privacy/size is a concern.

  • Best for professionals who need total control: Adobe Photoshop (+ Super Resolution in Camera Raw).
  • Best one-time-purchase desktop: Affinity Photo.
  • Best CLI/batch automation: ImageMagick (or GraphicsMagick for speed).
  • Best web-based quick tool (local processing): Squoosh.
  • Best CDN/DevOps integration: Cloudinary or Imgix.
  • Best AI upscaling: Topaz Gigapixel AI.

Quick workflow examples

  • Web delivery (automation): store originals, use Cloudinary/Imgix to request device-appropriate sizes and WebP/AVIF output, set cache headers on CDN.
  • Photography editing: raw → Lightroom/Affinity → resize with Super Resolution/Preserve Details → export with ICC profile and optimized compression.
  • Bulk archival resize: ImageMagick script to create multiple derivatives and strip sensitive metadata.

Conclusion

In 2025 there’s no single “best” image resize tool—choice depends on your priorities: local privacy and one-time purchase versus web-scale automation, or classical resampling versus AI-enhanced upscaling. For most professional workflows, combining a local editor (Photoshop/Affinity) with automation (ImageMagick or a CDN-based image service) and selective use of AI upscalers gives the best balance of quality, performance, and flexibility.

Comments

Leave a Reply

Your email address will not be published. Required fields are marked *