FireConvertApp vs XnConvert: honest head-to-head

Feature-by-feature matrix

18 rows. We lose on offline operation, file-size headroom, format breadth (500+ exotic/RAW), action depth (80+), scripting via XML profiles, zero-server privacy, and no sign-up of any kind. Orange check = meaningful advantage. Grey = roughly equivalent or depends on the job.

Where XnConvert beats us

XnConvert is a 15+ year desktop tool from XnSoft (the folks behind XnView). It's earned genuine respect in the desktop-power-user batch-converter niche. Here's where they're legitimately better than a web app can be:

• Offline + air-gapped operation. XnConvert is a local binary. Install once, run forever, on a plane, on a secure network with no internet egress, on the cabin laptop, on an airgapped analysis machine. We're a web app — our server tools need a connection. If offline is a hard requirement, XnConvert wins this row cleanly and it's not close.
• No file-size ceiling — your RAM is the limit. Our paid tiers cap at 5 GB per file. XnConvert has no built-in limit; a 40 GB scientific TIFF on a workstation with 64 GB RAM is a normal Tuesday. For huge single files or absurd batch volumes, the local-disk model wins.
• 500+ formats including RAW and exotic. XnConvert handles RAW files from basically every camera (CR2, NEF, ARW, ORF, RAF, DNG...), scientific formats (FITS, DICOM), legacy desktop formats (PCX, TGA, XCF), and obscure one-offs. We cover the ~10 formats 99% of people need. If you're a photographer, astronomer, or medical imaging person, the breadth gap is genuine.
• 80+ chainable image actions with XML profiles. Watermark with precise opacity and position, IPTC/XMP metadata editor with per-field control, curves and levels, channel mixer, sharpen, blur, emboss, mirror, rotate by arbitrary angle — chain any of them in any order, save the chain as an XML profile, reuse forever, share with colleagues. Our image tools expose the 80/20 set; XnConvert is the full parameter surface.
• Scripting via NConvert CLI. XnSoft ships a free companion CLI called NConvert that exposes the same engine headlessly — wire it into batch scripts, cron jobs, CI pipelines, PowerShell loops. We ship a web API for remote automation, but if your automation lives entirely on a single machine, NConvert is simpler than calling a web API.
• Smallest possible trust surface. A local binary from a known-for-15-years vendor, with an optional one-time $35 license, that never touches the network — that's about as small as a trust surface gets. Our server tools have a 60-minute memory-only retention policy but the abstract answer is still “yes, files touch our servers briefly.” XnConvert doesn't.

Where we beat XnConvert

• Zero install — works on any device with a browser. iPad, Chromebook, locked work laptop, borrowed family computer, phone. XnConvert is a Windows / Mac / Linux install that needs admin rights on the current machine. If the install is the blocker — and for a lot of people it is — we're the only option. Same URL, same tools, on every device you own.
• Cross-device continuity. Shoot a HEIC on your phone, convert it on your phone at /heic-to-jpg, download the JPG, AirDrop it. Then on the laptop later, the same URL works the same way. XnConvert is desktop-only — your phone workflow needs a different app entirely. For people who live across devices, the continuity is worth more than 490 extra format decoders they'll never use.
• PDF tools — images aren't the whole job. XnConvert is images only, by design. We ship PDF merge, compress, split, rotate, PDF↔Word, PDF↔JPG in the same tab. For anyone whose daily workflow mixes images and PDFs (most office workers, students, accountants), having both in one place beats two separate desktop tools.
• AI image tools bundled — they don't ship any. Background removal ( /remove-background), 2×/4× upscaling ( /upscale-image) — free, unlimited, run fully in your browser via ONNX. XnConvert does traditional resample only (Lanczos, bicubic, Mitchell). For modern AI-based workflows, we're a superset of what XnConvert ships.
• Audio, video, data — beyond images. MP3, WAV, FLAC, AAC, MP4, MOV, WebM, GIF, CSV, JSON, XML, YAML. XnConvert is images only, on purpose (XnSoft has separate tools for other media). If your file workflow spans media types, we cover it in one tab.
• Flat-rate monthly with commercial use included. $12.99–$29.99/mo, no per-file fees, commercial use bundled. XnConvert is free for personal and $35 one-time for commercial — a great deal if you'll use it for a decade, a worse deal if you need the web convenience and AI bundled. Different shapes of bill; ours is predictable-monthly for commercial bundled with AI + PDF + audio/video.
• Public remote API. Our v1 API covers image convert + PDF merge/split/compress/to-jpg with Bearer auth. XnSoft ships NConvert as a local CLI — powerful but not a remote endpoint. If your conversion needs to run from a Lambda, a Vercel function, a CMS upload hook, or any place that isn't “a machine with NConvert installed,” we're the cleaner path.

Pricing — side-by-side

Unusual rows here: XnConvert is free for personal use with a one-time $35 commercial license, no subscription. Our tiers verified on both public sites as of 2026-04-24.

The honest take: if you'll use a batch image converter daily for years on a desktop and you don't need AI / PDF / audio / video bundled, XnConvert's one-time $35 lifetime license is probably the better deal over a 5-year horizon. You pay us monthly when you need the cross-device web workflow, AI image tools, PDF suite, audio/video/data conversion, or a remote API — things XnConvert doesn't ship. Different shapes of bill for different jobs.

Which should you use when?

Like Squoosh, this is a “both live” comparison more than a “switch now” one. Here's the rule we'd give a friend.

1. Use XnConvert for desktop-heavy offline batch work. Thousands of RAW scans nightly, air-gapped machines, 40 GB TIFFs, IPTC metadata editing on product photography, XML profiles you share with colleagues, CLI automation via NConvert on a local box. We can't match that workflow and we're not pretending.
2. Use FireConvertApp when the install is the problem. Work laptop without admin rights, Chromebook, iPad, phone, borrowed family computer, public library machine. Same URL on all of them. Come to /tools and everything XnConvert ships for desktop is available in your browser — plus PDF tools at /merge-pdf and /compress-pdf, and iPhone HEIC at /heic-to-jpg.
3. Use us for anything AI, PDF, audio, or video. Need background removal or upscaling? /remove-background and /upscale-image are free, unlimited, browser-side. Need to merge PDFs alongside converting images? We do both in the same tab. Audio/video/data? Same tab. XnConvert is images-only by design — for mixed-media workflows we're a superset.
4. Use the API when you automate remotely. XnSoft's NConvert CLI is excellent for local automation — on a single machine with the binary installed, it's simpler than any web API. But if your automation lives in a serverless function, a CI pipeline on ephemeral runners, a CMS webhook, or a cross-team service, our /api/v1 is the cleaner path. Different automation shapes; pick the one that matches your infrastructure.

XnConvert is the right answer for the privacy-critical desktop-heavy batch workflow with unusual formats. We're the right answer for the web-native cross-device workflow with bundled AI and PDF. Both exist; both are useful; the real question is “which fits today's job.”

Common questions

Should I actually switch from XnConvert?

Depends entirely on what you use it for. If XnConvert runs nightly on a desktop that's always on, converting thousands of scans with a saved XML profile, air-gapped, you'd be downgrading to switch — stay with XnConvert, we can't match that workflow. If you use XnConvert because you needed a batch converter three years ago and the install has been sitting in your Start menu since, and half your converting now happens on your phone or iPad where XnConvert doesn't exist — we're probably the cleaner fit. Many people end up using both: XnConvert on the desktop for the heavy nightly jobs, us on the iPad and phone for the "right now" conversions.

What does XnConvert actually do that I can't do on FireConvertApp?

Three things worth naming. (1) Format breadth — 500+ formats including scientific imagery, legacy desktop formats, and RAW files from basically every camera. We cover the ~10 formats most people actually encounter; XnSoft covers formats you may have never heard of. (2) Action depth — 80+ image actions (watermark with custom opacity and position, IPTC/XMP metadata editor, channel mixer, curves, sharpen, mirror, emboss) chainable in any order and savable as an XML profile. Our image tools expose resize/crop/rotate/quality/format/metadata-strip — most of what most people need, not all of what XnConvert offers. (3) True offline + no file-size limit — your desktop's RAM is the ceiling, nothing uploads, works on a plane. We're a web app; we need a connection for server tools.

What do I get from a web converter that XnConvert can't give me?

Four things. (1) Zero install — we work on managed work laptops with locked admin rights, on Chromebooks, on iPads, on borrowed family computers. XnConvert needs admin to install. (2) Cross-device continuity — the same URL works on phone, tablet, desktop, and produces the same output. Photo on your phone, convert on the phone, download on the phone. XnConvert is desktop-only. (3) Bundled AI image tools — free unlimited background removal and 2×/4× upscaling, browser-side. XnConvert has no AI features. (4) PDF, audio, video, data. XnConvert is images-only by design. Our single tab covers images + PDF + audio + video + data conversions.

Is XnConvert really free? Why is there a $35 price tag I keep seeing?

XnConvert is free for personal and educational use — download, install, use, no reminders, no watermark, no feature lock. If you use it at a company, freelance for clients, or otherwise commercial, XnSoft asks $35 as a one-time lifetime license (no subscription). Honest take: $35 once for lifetime commercial use is one of the better deals in the converter market — if you live in XnConvert daily for work, buy the license. Our flat-rate monthly ($12.99–$29.99/mo) is better if you want commercial use of AI, PDF, audio, video bundled, or if you need the cross-device web workflow. Different shapes of bill.

Both tools run locally — isn't XnConvert strictly more private then?

For image-only conversion, yes. XnConvert is a local binary — files never leave your disk, there's nothing to upload or subpoena. Our AI tools (background removal, upscaling) are similarly browser-side — 100% local, nothing uploads, open DevTools → Network during inference and you'll see zero outbound requests. But our server conversions (PDF tools, audio/video, data formats) do upload to our servers, process in memory, and auto-delete within 60 minutes. If your only concern is image batch conversion and privacy is non-negotiable, XnConvert has a cleaner privacy story. If you also need PDF/audio/video and are comfortable with memory-only server processing with a 60-minute retention ceiling, we're competitive.

What's the honest "when to use which" rule?

Use XnConvert when: you batch-convert thousands of files nightly on a desktop, you work with unusual formats (RAW, scientific, legacy), you need air-gapped or offline operation, you want free-forever for personal use with a one-time $35 for commercial, or you rely on scripting via XML profiles and NConvert CLI. Use FireConvertApp when: you switch devices often (phone → tablet → laptop), you can't install software on the current machine, you need PDF tools or audio/video/data conversion in the same tab, you want AI background removal or upscaling, or you prefer flat-rate monthly with commercial use bundled. Most people's honest answer is "both, for different machines" — XnConvert on the desktop, us everywhere else.