Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

SIC! — Simple Image Converter review

Free#21 of 36 in Image Converter Software

A free, open-source Windows converter for batch image conversion and resizing.

6.7/10Editor score
Visit SIC!
SIC! — Simple Image Converter6.7 Visit SIC!

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

SIC! — Simple Image Converter is a free, open-source Windows desktop app for converting and resizing image files. It suits solo users and small teams that want a straightforward batch workflow, including people who need to convert HEIC/HEIF input or create multi-size ICO files. Images can be brought in from files, folders, the clipboard, drag-and-drop, or links, and converted files can be saved to a chosen location. The project also describes screen-reader-friendly labels and keyboard navigation, making accessibility part of the app’s stated interface design.

Its feature set reaches beyond format changes without becoming a general-purpose image editor. SIC! can resize while keeping proportions or crop to exact dimensions, and it offers both a graphical interface and command-line conversion mode. Portable mode stores application data alongside the executable. These options make it a practical fit for repeated local conversion tasks, including command-line workflows, while its scope remains focused on conversion and resizing. It is a desktop product for Windows rather than a web service, and it has no API access.

The project is free and open source, with the repository naming the Apache License 2.0 and pointing users to GitHub releases or installation through winget. That keeps the buying decision simple: there are no paid tiers to weigh, but users should check whether the listed inputs and outputs cover their workflow. Choose SIC! for free batch conversion on Windows, particularly when resizing, HEIC/HEIF input, or ICO output matters. Look elsewhere if you need a web-based converter, API access, or broader platform support.

SIC! — Simple Image Converter pros and cons

  • Where it wins
    • Batch-converts images to JPG, PNG, WebP, ICO, BMP, TIFF, GIF, and AVIF
    • Reads HEIC/HEIF input and supports resizing or exact-dimension cropping
    • Offers both a graphical interface and command-line conversion mode
  • Where it doesn't
    • Runs on Windows only
    • Supports eight listed output formats, limiting format breadth
    • Desktop software only; no web app or API access

SIC! — Simple Image Converter fact sheet, pricing and score →

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated · How we research and update