Point Sortly at a messy folder and it reads each file, renames it by what's actually inside, tags and sorts it, and flags duplicates — thousands of files at once, 100% on your PC.
1. How we manage documents today
Almost everyone has a version of the same problem. Your Downloads and Documents folders have quietly become a landfill of files with names like scan_003.pdf, document(7).pdf, and IMG_20240611.pdf. Bank statements, invoices, contracts, receipts, tax forms, letters — all mixed together, all named by whatever device or website produced them, none of it findable when you actually need it.
The way most people cope is one of two extremes. Either they ignore it entirely, letting the pile grow until finding a single document means opening file after file to see what's inside, or they try to stay organized by hand: renaming each download as it arrives, dragging it into the right folder, and hoping they keep the discipline up. Almost nobody does. Life is busy, files arrive faster than anyone can sort them, and the backlog only grows.
There are tools that promise to help, but they come with catches. The genuinely capable one, DEVONthink, is Mac-only and costs $99–199. The free alternatives typically require setting up Docker and running a server — a level of technical fuss most people will never tolerate just to tidy their PDFs. And a huge number of “cloud” organizers ask you to upload your most sensitive documents — statements, contracts, tax records — to someone else's servers. For files this private, that's a hard no for a lot of people. The result is that Windows users, in particular, have had no clean, private, one-time option to fix the mess.
It's also worth noticing how much of this backlog builds up passively rather than through neglect. A bank sends a statement as an email attachment; you save it “for now.” A receipt arrives after an online order; you download it in case you need it for a return. A scanner or phone camera produces a PDF with a filename generated by the device, not by you. None of these moments feel like the wrong choice in isolation — they're small, reasonable acts of saving something you might need. The problem only becomes visible months or years later, when the folder has thousands of entries and no discipline applied at the moment of saving is enough to have prevented it.
2. The pain point: a document graveyard that costs you time and peace of mind
A disorganized document folder isn't just untidy — it has real, recurring costs that show up at the worst possible moments.
- You can't find things when it matters. Tax season arrives, or a warranty claim comes up, or an accountant asks for “that invoice from June,” and you're left opening dozens of cryptically named PDFs one by one.
- Manual renaming never scales. Renaming files by hand works for five documents, not five thousand. The moment the backlog is large, the manual approach collapses under its own weight.
- Duplicates pile up invisibly. The same statement gets downloaded twice, saved from an email, and copied to another folder. You end up with multiple copies of the same file and no easy way to know which is which.
- Privacy is at stake. The documents most in need of organizing — financial, legal, medical — are exactly the ones you should be most reluctant to upload to a cloud service run by strangers.
- The good tools are out of reach. The best-known solution is locked to Mac and priced high; the free ones demand server setup. Neither fits a Windows user who just wants the mess gone.
The frustration is that the information needed to organize these files is already inside them. A statement knows its date and its bank. An invoice knows its vendor. The problem was never the lack of information — it was the lack of a private, effortless way to read that information and act on it in bulk. That's exactly what HolyByte Sortly does.
3. Meet HolyByte Sortly
HolyByte Sortly is an offline document organizer for Windows that clears your document graveyard in a single pass. You point it at a folder and it reads each file, renames it based on what's actually inside — the date, the vendor, the document type — then tags it, files it into folders, and flags duplicates. It handles thousands of files at a time, and it does all of this 100% on your PC. Nothing leaves your machine.
Sortly is deliberately the clean Windows answer to a gap in the market. The tool most people consider the gold standard is Mac-only and expensive; the free options need Docker and a server. Sortly is bought once, with no subscription, and it keeps your private documents private by design — it's shipped as open, inspectable source so you can verify the “100% offline, zero network calls” promise for yourself.
Crucially, Sortly is built to be safe. It defaults to a dry run, shows you an editable preview of every change it wants to make, and keeps a full rollback log. Nothing on disk changes until you explicitly click Apply — so you're always in control, and you can always undo.
4. Key features and what they actually do for you
Point at a folder and walk away
Sortly performs a recursive scan of the folder you choose, complete with a progress bar so you can see it working. It's built for volume — in testing it processed around 5,000 files in roughly 20 seconds — which means even a years-deep backlog is handled in one sitting rather than one file at a time.
Content-based renaming
This is the heart of the tool. Instead of relying on whatever meaningless name a file arrived with, Sortly reads the content and renames each file to a pattern you choose, for example 2025-06-14_Acme-Ltd_Invoice.pdf. Each rename comes with a confidence score, so you can immediately see which suggestions Sortly is sure about and which deserve a quick glance before you accept them.
Preview and undo, always
Nothing is left to chance. Sortly runs as a dry run by default, presents an editable preview table of every proposed change, and keeps a full rollback log. You review, adjust anything you like, and only then click Apply. If you ever want to reverse a batch, the rollback log has your back. This safety-first design is what makes bulk renaming something you can trust rather than fear.
Automatic type detection and foldering
Sortly recognises documents across 12 categories — invoice, statement, contract, receipt, letter, tax, and more — and can optionally sort each type into its own subfolder. You can save your setup as a preset, so the next time you tidy a folder, your preferred naming pattern and foldering rules are ready to go.
De-duplication by content hash
Because Sortly compares files by their actual content using a content hash, it can flag true duplicates even when they have different names. That means the second copy of a statement hiding under a different filename won't slip past you, and you can finally clear out the redundant clutter.
Optional OCR for scans and image PDFs
Not every PDF has selectable text — many are just scanned images. Sortly offers optional OCR for scanned and image-based PDFs using the free Tesseract engine, with instructions included. That lets it read and organize even the documents that started life as a photo or a scan.
Why content, not filenames, is the only reliable signal
Most tidy-up tools — the built-in file sorters in various operating systems, browser extensions, even some paid utilities — work by sorting on metadata: the file extension, the date it was downloaded, sometimes the source website. That approach fails for exactly the files that need organizing most, because a downloaded PDF's metadata rarely says anything useful about what's inside it. A statement downloaded today might be for last month, last quarter, or an account you closed years ago; a receipt's filename tells you the store's naming convention, not the purchase date or amount.
Sortly's approach is different because it reads what the document actually says. The date on the page, the vendor's name in the header, the words that distinguish an invoice from a receipt from a letter — that's the information a human would use to name and file the document, and it's the information Sortly extracts before it ever proposes a rename. That's also why the confidence score matters: when the content is clean and unambiguous, Sortly is confident; when a document is oddly formatted or the OCR text is noisy, the lower confidence score tells you exactly where to look twice before applying the batch.
Who HolyByte Sortly is for
- Anyone drowning in downloads — if your Downloads and Documents folders are a wall of
scan_003.pdf, this is built for you.
- Freelancers and small business owners juggling invoices, receipts and contracts who need them findable at tax time.
- Households managing personal paperwork — statements, bills, medical letters, warranties — who want order without uploading it all to the cloud.
- Privacy-conscious professionals handling sensitive files who need organizing to happen entirely on their own machine.
- Windows users who've watched Mac users enjoy a great organizer and refused to set up Docker and a server just to get one.
How it works, step by step
- Install it. Sortly runs on Windows with Python 3.10+; the included
run.bat installs everything and launches the app, and the README walks you through it in about two minutes.
- Choose a folder. Point Sortly at the folder you want to clean; it scans recursively with a progress bar.
- Pick your naming pattern and rules. Set how files should be renamed, which types to detect, and whether to sort into subfolders — then save it as a preset if you like.
- Review the preview. Sortly shows an editable table of proposed renames with confidence scores, plus any duplicates it found. Nothing has changed on disk yet.
- Click Apply. Approve the changes; a full rollback log is kept so you can undo if you ever need to.
Real ways it saves you time
- Years of backlog cleared in one sitting. Because it processes thousands of files fast, the mountain you've been avoiding becomes a single afternoon task — or less.
- Documents you can actually find. Consistent, content-based names mean the next time someone asks for “the June invoice from Acme,” it's right where you'd expect and named exactly that.
- No more duplicate confusion. Content-hash de-duplication surfaces the redundant copies you didn't know you had, so you can reclaim space and remove doubt.
- Confidence to bulk-edit. The dry-run preview and rollback log mean you never have to gamble with your files, which removes the fear that usually stops people from tidying at scale.
- No subscription, no cloud. A one-time purchase that runs entirely offline means your private documents stay private and your budget stays predictable.
Tips to get the most out of Sortly
- Start with your worst folder. Point it at Downloads first — it's usually the messiest and gives you the most satisfying result on the first run.
- Design a naming pattern you'll love long-term. A date-first pattern like
YYYY-MM-DD_Vendor_Type sorts beautifully by name and stays consistent across everything.
- Use the confidence scores. Trust the high-confidence renames and give the lower-confidence ones a quick check in the preview before applying.
- Turn on OCR for scan-heavy folders. If your PDFs are mostly scans or photos, enabling OCR lets Sortly read and organize them properly.
- Save presets for recurring cleanups. Once you've dialled in your rules, save them so future tidy-ups take seconds to configure.
Frequently asked questions
Is HolyByte Sortly really 100% offline?
Yes. Everything runs on your PC and nothing leaves your machine. Because it ships as open, inspectable source, you can search every file for network calls and verify the “zero network calls” promise yourself.
Will it change my files without asking?
No. Sortly runs as a dry run by default and shows you an editable preview of every proposed change. Nothing on disk is altered until you click Apply, and a full rollback log lets you undo a batch if you ever need to.
What kinds of documents can it organize?
It detects 12 document categories — including invoice, statement, contract, receipt, letter and tax — and renames files by their content, such as date, vendor and type. It can also sort each type into its own subfolder.
Can it handle scanned documents?
Yes, with optional OCR. For scanned or image-based PDFs, Sortly can use the free Tesseract engine (instructions included) to read the text so it can rename and organize them like any other file.
What do I need to run it?
Sortly runs on Windows with Python 3.10+ (free). The included run.bat installs everything and launches the app, and the README walks you through setup in about two minutes.
How fast is it on a large folder?
It's built for volume. In testing it processed roughly 5,000 files in about 20 seconds, so even a deep, years-old backlog can be handled in a single pass.
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