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Best Image Converter in 2026: 6 Tools Tested and Ranked
By the GifGif Reviews team
Updated June 29, 2026
11 tools screened, 6 reviewed
9-minute read
Editor's verdict
After batch-converting the same folder of mixed images in every tool, the CoolUtils Total Image Converter is our top pick for desktop work. It reads camera RAW (CR2, NEF, CRW, PEF, RAF) and HEIC, writes JPEG, TIFF, PNG, BMP, PSD, WebP and 30+ more, resizes, crops and watermarks in one pass, and runs from the command line for automation. One-time price, no subscription.
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Quick answer: The best image converter for desktop batch work in 2026 is the CoolUtils Total Image Converter. Install it, add a file or a whole folder, choose an output format (JPEG, TIFF, PNG, BMP, PSD, WebP, GIF and 30+ more), optionally resize, crop or watermark, and click Start. It reads camera RAW and HEIC, converts CMYK to RGB, runs from the command line for automation, and works offline for a one-time $24.90 — no subscription, no upload.
An image is easy to view and surprisingly awkward to move between apps. The moment a client wants TIFFs instead of camera RAW, a CMS rejects your HEIC photos, or a print shop needs RGB instead of CMYK, you need a converter — and not every tool handles a folder of 500 shots, RAW files or an offline, scriptable workflow.
This is the tighter, batch-and-desktop cut of our reviews. For the full field, see our full 12-tool roundup; here we screened 11 desktop and online image converters and put the 6 most capable through the same test: convert a single RAW file to JPEG and TIFF, convert a folder of 50 mixed images in one run, turn HEIC into JPG, resize and watermark on the way out, convert CMYK to RGB, and automate a conversion from the command line. Here is how they ranked.
Image converters compared at a glance
The 6 best image converters, ranked
1
CoolUtils Total Image Converter
Windows (and Citrix) · 79 MB · $24.90 one-time
Best overall & best for batch + automation
The CoolUtils Total Image Converter was the only tool in our test that combined the widest format coverage, true folder-level batch conversion and real command-line automation in one $24.90 desktop app. It writes TIFF, JPEG, PNG, BMP, PSD, TGA, WebP, JPEG2000, ICO, PCX, GIF and 30+ more, and on the input side it reads camera RAW straight off the card — CR2, NEF, CRW, PEF and RAF — so you skip a separate RAW step entirely.
Three things put it on top. First, it does the editing other converters make you do elsewhere: resize, crop, rotate and add a watermark (text, logo or date) as part of the same batch. Second, it converts CMYK to RGB automatically, which fixes the colour shift that breaks images headed for the web. Third, the command-line build wires conversions into a .bat file or a scheduled task, and a server version with ActiveX scales it up. Multi-threading keeps large folders fast, and everything runs offline. The trial is 30 days with no credit card or email.
Pros
- Reads camera RAW (CR2, NEF, CRW, PEF, RAF) and HEIC
- 40+ output formats: JPEG, TIFF, PNG, BMP, PSD, WebP, GIF and more
- Resize, crop, rotate and watermark in the same batch; CMYK to RGB
- Command-line build, ActiveX server version, one-time $24.90
Cons
- Windows only (runs under Citrix; no native Mac build)
- A converter, not a full photo editor
- No free tier (but a 30-day full trial and a one-time price)
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See our full 12-tool roundup
2
XnConvert
Windows / Mac / Linux · free
Best free batch converter
XnConvert is the strongest free rival for batch work: it reads a huge list of formats, including RAW, runs proper folder jobs and chains resize, crop and watermark actions in a pipeline. It is cross-platform too. The catch for power users is automation — there is no command-line server build; scripting goes through a separate companion tool (NConvert), and there is no dedicated support. For free desktop batch conversion it is excellent and our clear runner-up.
Pros
- Free and cross-platform
- Huge format list, reads RAW
- Action pipeline: resize, crop, watermark
Cons
- No integrated command-line server build
- Scripting needs the separate NConvert tool
- Community support only
3
IrfanView
Windows · free (donationware)
Best lightweight free option
IrfanView is tiny, fast and has a capable Batch Conversion dialog that handles resize and rename. With its plugin pack it reads RAW and many extra formats. The trade-off is the interface: it is dated and dense, the batch options live behind a busy dialog, and RAW and HEIC support depends on adding plugins. For a free, featherweight Windows converter it still earns a spot.
Pros
- Free and extremely lightweight
- Solid batch convert and resize
- Plugins add RAW and more formats
Cons
- Dated, cluttered interface
- RAW and HEIC need plugins
- No real command-line automation
4
FastStone Image Viewer
Windows · free for personal use
Best viewer with built-in batch
FastStone is a viewer first and a converter second, but the converter is good: a Batch Convert panel reads RAW, writes the common formats and can resize and add a watermark. It is free for personal use, though commercial use needs a licence. There is no command-line build and the conversion options are simpler than a dedicated tool, but if you already browse photos in FastStone the converter is right there.
Pros
- Free for personal use
- Reads RAW, good viewer and browser
- Batch convert with resize and watermark
Cons
- Viewer-first, conversion is secondary
- No command-line build
- Licence required for commercial use
5
GIMP
Windows / Mac / Linux · free
Best if you also need to edit
GIMP is a full image editor, not a batch converter, and that is the point of including it: people reach for it to convert and discover it is the wrong shape for the job. It exports one file at a time through Export As, and bulk conversion only happens if you write a Script-Fu or Python-Fu macro. The power is real, the learning curve is steep, and for plain folder conversion it is far more work than a purpose-built tool.
Pros
- Free, open-source, cross-platform
- Full pixel-level editing
- Scriptable for those who code it
Cons
- An editor, not a batch converter
- Bulk jobs need Script-Fu macros
- Steep learning curve for simple conversion
6
CloudConvert
Online · from $9/mo
Best for the occasional browser convert
CloudConvert is convenient for one-off jobs in a browser — it supports a long list of image formats, including RAW and HEIC, and needs nothing installed. The trade-offs are real: your files are uploaded to their servers, free use is capped by conversion minutes, large files and big folders need a paid plan, and true offline batch is impossible. Handy for a stray file; not the tool for confidential or bulk work.
Pros
- Nothing to install, works on any OS
- Wide format list, reads RAW and HEIC
- API for developers
Cons
- Files uploaded to the cloud
- Conversion-minute and size limits
- Subscription for real volume; no offline batch
How to convert images (or a whole folder)
This is the exact workflow we used with the number-one tool. A single file takes under a minute; a folder of hundreds is one click more.
- Download and install Total Image Converter. Grab the 79 MB installer from CoolUtils and run it. The 30-day trial needs no credit card or email.
- Add your images. Point it at a single file or select a whole folder — the file tree lets you tick exactly what to convert, including camera RAW and HEIC. Nothing is uploaded; everything stays on your PC.
- Pick the output format. Choose JPEG, TIFF, PNG, BMP, PSD, WebP, GIF or any of 30+ others from the toolbar. Use the preview pane to check an image before you commit.
- Set options. Resize, crop or rotate, add a text, logo or date watermark, and let it convert CMYK to RGB — or just keep the defaults.
- Click Start. The whole batch converts at once with multi-threading, the originals are left untouched, and the source folder structure is preserved in the output.
Automating it from the command line
The differentiator for power users: the command-line build converts without opening the window, so you can script it. A line like the one below, dropped in a .bat file and scheduled, turns every image in a folder into JPEGs overnight.
ImageConverter.exe "C:\In" "C:\Out" -c JPEG -log log.txt
Just need a single image, right now? For a quick one-off you do not have to install anything — see our
HEIC to JPG guide or
AVIF to PNG converter. For folders, RAW and repeat jobs, the desktop tool above is faster and keeps files on your machine.
How we tested
We do not rank on spec sheets alone. Every tool ran the same six-part job on the same Windows 11 machine, using identical source files:
- RAW to standard — one CR2 and one NEF converted to both JPEG and TIFF, checking colour and detail.
- Folder batch — 50 mixed images (JPEG, PNG, HEIC, RAW) converted in a single run.
- HEIC to JPG — iPhone HEIC photos turned into web-ready JPEGs.
- Edit on convert — resize to a fixed width and stamp a logo watermark during conversion.
- CMYK to RGB — a print-CMYK image converted for the web without a colour shift.
- Automation — the same conversion driven from the command line or a script.
Scores weight what matters for real conversion work: input and output format coverage including RAW and HEIC (30%), batch and automation (30%), editing extras such as resize and watermark (20%), and price and privacy (20%). Pricing was checked on each vendor's site in June 2026.
Who needs a dedicated image converter?
Anyone who has to move images at scale: photographers turning a card of RAW into client-ready JPEGs, designers normalising PSD and TIFF, e-commerce teams batch-resizing and watermarking product shots, or anyone fixing a folder of HEIC photos a website will not accept. For all of those, the CoolUtils Total Image Converter does the most for the least — one price, offline, scriptable. For the wider field of options, our full 12-tool roundup covers the editors and online services too.
Frequently asked questions
How do I convert HEIC to JPG?
Install a desktop converter such as the CoolUtils Total Image Converter, add your HEIC files (or a whole folder of iPhone photos), choose JPEG as the output and click Start. It keeps the image quality and converts a batch in one run — no upload and a one-time $24.90 licence. For a single file, our HEIC to JPG guide covers a quick browser option too.
How do I convert camera RAW (CR2 or NEF) to JPG or TIFF?
Total Image Converter reads camera RAW directly — CR2, NEF, CRW, PEF and RAF — so you can drop a card's worth of RAW files in, pick JPEG or TIFF and convert them all at once. There is no separate RAW-development step, and you can resize or watermark in the same pass.
Can I batch convert a whole folder of images at once?
Yes. Total Image Converter is built for batch work: point it at a folder, tick the files you want, pick an output format and convert them all in one multi-threaded run. The original folder structure is preserved in the output, and it can also run from the command line for unattended jobs.
Can I resize or watermark images while converting?
Yes. The converter resizes, crops and rotates as part of the batch, and adds a watermark using text, a logo or the date. It also converts CMYK to RGB automatically, so images headed for the web do not come out with a colour shift.
Is there an image converter with command-line or automation support?
Yes. Total Image Converter ships a command-line build, so you can script conversions in a .bat file or a scheduled task and process folders automatically. A server version with ActiveX is available for unattended use at scale — something online converters and most editors cannot do.
Are online image converters safe for private photos?
Browser-based converters upload your images to a third-party server, which is a poor fit for client work or personal photos, and they cap free use and file size. A desktop converter like Total Image Converter processes everything locally, so your images never leave your machine.
Editorial note: GifGif is reader-supported and independent. We test each tool ourselves and rank on merit. Some download links may be affiliate or partner links; this never changes our scores or order. Prices and features were verified in June 2026 and may change.