CloudConvert vs FreeConvert vs MyTools: Best PDF-to-CBR Tool?

You have a comic or manga sitting on your laptop as a PDF, and the reader you actually want to use — Chunky on an iPad, an older Kobo, a Pocketbook on the commute — won't list it. Those apps filter their library by extension and quietly ignore anything that isn't .cbr. So you go looking for a converter, and within a minute you're staring at a dozen of them wondering which one to trust with the file.

This is a comparison of three of the most common choices for turning a PDF into a CBR: CloudConvert, FreeConvert, and MyTools. They take three genuinely different approaches, and the right pick depends less on the format and more on how big your files are, how much you care about uploading them, and whether you're doing this once or migrating a whole shelf.

What a PDF-to-CBR Converter Actually Does

A CBR is a comic book archive — your pages, one image per page, bundled into a single file with a .cbr extension. Converting a PDF means rendering each page to an image, naming them in reading order, and zipping them up. (Worth knowing up front: no browser-based or mainstream web tool makes a real RAR archive — they all output a renamed ZIP, which every modern reader accepts as .cbr. The extension is what matters, not the compression underneath.)

People hit this conversion for concrete reasons:

A strict reader. Chunky, older Kobo and Pocketbook firmware, and some YACReader profiles whitelist .cbr and skip PDFs and even .cbz files entirely.
Sideloading. A CBR copied over USB to an e-reader keeps your place and fits panels properly, where a raw PDF often forgets bookmarks and zooms awkwardly.
A migration. Switching devices or unifying a collection so every file shares one extension and behaves the same in the library list.

Most people want this done in a browser rather than installing a desktop app — it's usually a one-off, often on a work laptop where you can't install anything, and sometimes on the tablet itself.

CloudConvert

CloudConvert is the heavyweight general-purpose converter — hundreds of format pairs, a documented API, and integrations with Dropbox and Google Drive. PDF-to-CBR is just one entry in a very long list.

What it gets right

Generous file size. The free tier handles files up to roughly 1 GB, so a thick scanned omnibus that would choke a lighter tool goes through in one pass.
Format breadth and integrations. If you also need CBR-to-PDF, EPUB, or to pull the source straight from cloud storage, it's all in one place — useful when conversion is a recurring part of a workflow.
No account for casual use. You can run a conversion on the free daily allowance without creating a login.

Where it falls short

Your file is uploaded. The PDF is sent to CloudConvert's servers, processed there, and held under a retention window before deletion. For a personal comic that's usually fine; for anything sensitive it's a consideration a local tool sidesteps entirely.
A daily ceiling, then payment. Free use is capped per day (reported as around 25 conversions or conversion-minutes — the exact accounting is a little opaque), after which you buy credits or subscribe. Migrating a large library can run you into the wall.
Overkill for one job. The interface is built for a power tool. For a single PDF-to-CBR you click through more than you need to.

FreeConvert

FreeConvert is the close cousin — another broad online converter with a similar free-then-paid model, a polished interface, and a large list of supported formats including comic archives.

What it gets right

Large uploads, like CloudConvert. The free tier advertises up to 1 GB per file, comfortably above what a browser-only tool can hold in memory.
Clean, guided UI. Upload, pick output, download — the flow is easy to follow, and there are output options for image quality on supported conversions.
No signup to start. Basic conversions run without an account.

Where it falls short

The daily limit is real and easy to hit. FreeConvert meters free use by "conversion minutes," and independent write-ups report the practical ceiling lands at roughly ten conversions a day before you're nudged toward a paid plan — fine for one comic, tight for a batch. (Worth verifying against the current free tier if you're planning a bulk migration.)
Server-side again. Same trade-off as CloudConvert: your PDF leaves your device to be processed, with ads and upgrade prompts around the free path.
Paywall on volume. The model is built to convert you to a subscription once you're doing this regularly.

MyTools

MyTools takes the opposite design stance: a single-purpose PDF-to-CBR converter that runs entirely in your browser tab. The PDF is parsed, the pages rendered, and the archive built in JavaScript and WebAssembly on your own machine — nothing is uploaded.

What it gets right

Nothing leaves your device. There's no upload, no server-side copy, no retention policy to read. Close the tab and the input PDF and the finished CBR evict from memory together. That's the headline difference from both cloud tools.
Free with every option unlocked, no account. JPEG or PNG output, grayscale to shave 30–40% off a monochrome series, a custom page range to clip a single chapter, and batches of up to 20 PDFs at once — all with no signup, no watermark, and no daily quota.
Built for the strict readers specifically. It writes a correctly-named .cbr with pages zero-padded (0001.jpg…) so filename order matches reading order on devices that don't sort cleverly — exactly the case that sends most people looking for a converter.

Where it falls short

A smaller per-file ceiling. The limit is 100 MB per PDF, well under CloudConvert's and FreeConvert's ~1 GB. A huge omnibus has to be split into two halves with the page-range option (they'll sit adjacent in the series list, but it's an extra step).
One job, one direction. It converts PDF to CBR and nothing else. No CBR-to-PDF, no EPUB, no cloud-storage imports, no API — if you need a Swiss-army converter, the cloud tools win.
Batch and range caps. Up to 20 files per batch, and the custom page range applies to single-file conversions only — queue a batch and every page of every file goes in.

At a Glance

	CloudConvert	FreeConvert	MyTools
Free tier	Daily cap, then paid	Daily cap, then paid	Unlimited, fully free
File size limit	~1 GB	~1 GB	100 MB per PDF
Signup required	No (for casual use)	No (for casual use)	No
Files uploaded to server	Yes	Yes	No — runs in your browser
Format breadth	Very wide + API	Very wide	PDF → CBR only
Best for	Big files, mixed needs	Occasional large jobs	Privacy, batches, strict readers

Which One Should You Pick?

If your PDF is genuinely large — a 600-page scanned omnibus pushing past 100 MB — CloudConvert is the practical choice, because its 1 GB ceiling means you convert in one pass instead of splitting the file. The cost is uploading your comic and watching the daily limit if you have several to do.

If you convert files of all kinds occasionally and want one tool that does CBR today and an EPUB or a spreadsheet next week, either CloudConvert or FreeConvert earns its place. Pick by which interface you prefer; they're close, and both are server-side with comparable daily caps.

If your files are normal-sized comics and your priority is keeping them off someone else's server — or you're sideloading a stack of them onto a Kobo or Pocketbook and don't want to ration conversions against a daily quota — MyTools is the better fit. It's purpose-built for the exact "my reader only shows .cbr" problem, the options you'd pay for elsewhere are free, and the file never leaves your tab. Just check your largest PDF against the 100 MB limit first.

The Bottom Line

CloudConvert and FreeConvert are powerful, do-everything converters that win on raw file size and format range, at the cost of uploading your file and budgeting against a daily cap. MyTools trades that breadth for privacy, unlimited free use, and a workflow shaped around the readers that actually demand a CBR. For most people converting a comic to read on their own device, that's the trade worth making.

Want to keep your comics off a server and skip the signup? Try the PDF to CBR converter for free →