This page exists to fix that. We make renamer.ai, which has a genuinely free tier, and we are going to tell you exactly what that tier is and is not, then hold every other tool in the category to the same standard. The one question that matters more than price, though, is whether a renamer actually reads your files. A free tool that relabels filenames you still have to open by hand is not worth zero dollars. It is worth less, because it wastes your time.
Best AI File Renamer
AI File Renamer Free: What "Free" Actually Means in 2026
You searched for a free AI file renamer, and the results are a mess. One tool says "free" and means a 14-day trial. Another says "free" and means 15 credits that run out on Tuesday. A third says "free" and means open-source code you have to wire up yourself with your own API key. They are all telling the truth, and they are all misleading you, because "free" does a lot of work in that sentence.
What "Free AI File Renamer" Usually Means
When a file renaming tool says "free," it almost always means one of four things, and they are not the same deal.
A permanent free plan is a tier that stays free forever at a set volume. You do not get a countdown. You do not get a paywall at the end of the month. You get the same allowance next month, and the month after. Renamer.ai's Starter plan works this way: $0, 25 files a month, ongoing.
A free trial is a time-limited full version. You get everything for 7 or 14 days, then you pay or lose access, including the parts you were actually using. The word "free" here describes a window, not a plan.
Free credits are a metered sample. You get a fixed number of operations on signup, 15 or 50, and when they are gone they are gone until you pay. It feels free until you do the math on how many files you actually rename in a week.
Open-source free means the code costs nothing and you provide the rest. You install it, you bring your own API key for the model that does the actual work, and you carry the setup and the running cost. Free is accurate about the license and silent about everything else.
None of these is dishonest on its face. The dishonesty is in leaving out which one you mean. So here is the test that matters more than any of them.
The One Honest Test: Does It Read Your Files?
Price is the easy question. The hard one is what the tool does to earn its name as an AI file renamer.
A rule-based renamer applies patterns to filenames you already have. It swaps spaces for underscores, adds a date prefix, numbers files in sequence. It is fast, it is often free, and it cannot help you with a folder full of scan_004.pdf and IMG_8821.jpg because those names contain no pattern to act on. The file inside might be an invoice, a contract, a photo of a whiteboard, or a receipt. The rule-based tool will never know, because it never looks.
A content-reading renamer opens the file. It reads the document with OCR, or describes the photo with vision, and writes a name based on what is actually there. scan_004.pdf becomes Hollis_INV-447_2026-03-11.pdf because the tool read the invoice and pulled the vendor, the number, and the date out of it. That is the only kind of renaming that helps with the files people actually struggle with, the ones whose names say nothing.
This is the dividing line for the whole comparison below. A free tool that does not read content is a free tool that still leaves you opening files by hand. Hold every entry to that test.
Free AI File Renamers Compared
Here is how the free tiers actually stack up. The table below uses each tool's own published free terms as of 2026.
| Feature | Renamer.ai | Riffo | FilesDesk | RenameClick | ozgrozer |
|---|---|---|---|---|---|
| Reads file content | Yes | Yes | Yes | Yes | Yes |
| Free tier limit | 25 files/month | Free (no stated cap) | 15 credits on signup | Free, unlimited files | Free, BYOK model |
| Starting price | $0 (Starter) | Free | $5 / $20 paid tiers | $8 / $48 paid tiers | $0 (you pay the model) |
| File types supported | 25+ doc and image types | Documents and images | Documents and images | Documents and images | Documents and images |
| Processes where | Desktop on-device, web in cloud | On-device (macOS) | Desktop and web | Desktop (Win 10/11) | Local CLI |
| Honest limitation | 25-file monthly cap, paid tiers are recurring subscriptions | macOS only, no Windows or web app | Credits run out, not a permanent tier | Windows-focused, paid tiers are lifetime or subscription | You supply and pay for the AI model yourself |
| Best for | Solo operators who want a permanent free tier that reads content | Mac users who want a free, simple content renamer | Trying the tool before deciding to pay | Windows users who want a local content renamer | Developers who want to run their own pipeline |
| Credit card required? | No | No | No | No | No (but an API key is) |
Two things in that table do the heavy lifting. The "reads file content" row is the one that decides whether the tool helps with unnamed files at all. The "credit card required" row is the one that decides whether "free" means free today or free after you hand over a card. Renamer.ai is the only entry that is permanent, reads content, and asks for no card.
Renamer.ai's Free Tier, Honestly
Renamer.ai's free tier is the Starter plan, and it is a plan, not a trial. It costs $0, it renews at $0, and it gives you 25 file renames every month. There is no countdown clock, no 14-day window, and no point at which the free tier switches off and asks you to pay. Next month you get another 25.
What it does is read the file and write the name. Drop in an invoice and it pulls the vendor, the invoice number, and the date. Drop in a contract and it reads the parties and the agreement type. Drop in a photo and the vision model describes what is in the frame. The name it suggests reflects what is inside, not the filename someone happened to give it. It runs as a desktop app on Windows and macOS, renaming on your device, or in the browser, where files are encrypted and deleted after 24 hours.
The honest limitations, stated plainly, are these. The 25-file monthly cap is real. If you rename 30 files in March, the last five wait until April unless you upgrade. The paid tiers, Pro at $9.95 for 200 files, Power User at $29.95 for 1,000, and Ultimate at $99.95 for 5,000, are recurring monthly subscriptions. There is no lifetime license. Some competitors offer a one-time $48 or $20 payment that lasts forever, and if you rename a high volume every single month, that lifetime deal can cost less over a year than a subscription. That is renamer.ai's honest tradeoff: a permanent free tier and no credit card up front, in exchange for recurring pricing once you outgrow the free 25.
For a solo operator at 25 files a month or fewer, the tradeoff does not exist. The free tier is just free.
Riffo: Free, but Mac Only
Riffo is the closest thing to a straight answer in the free-tier search results. It is free, it reads file content, and it does not advertise a hard monthly cap on the free tier. For a Mac user who wants to point a tool at a folder and get content-aware names back without thinking about credits or cards, it is a genuine option.
The honest limitation is platform. Riffo runs on macOS and only macOS. If your work machine is Windows, or you want to rename files from a browser without installing anything, Riffo is not in the conversation. It also does not publish a documented monthly cap, which is either a generous free tier or a quiet one; treat the absence of a stated limit as a thing to watch, not a promise of unlimited. For Mac-only workflows at low volume, it is a fair free pick. For anything cross-platform, it is not.
FilesDesk: 15 Free Credits
FilesDesk shows up in the free results because it gives you 15 credits when you sign up. Each credit is one rename. That is enough to test whether the tool reads your files the way you need it to, and for some people it is enough to handle a one-time cleanup of a small folder.
The honest limitation is that 15 credits is a sample, not a plan. When they are gone you are on the paid tiers, $5 or $20, and the free tier does not refill. It is not a permanent free tier in the way renamer.ai's Starter is. If you rename files once a quarter, 15 credits might cover you each time you come back, and that works. If you rename files every week, you will burn through 15 credits in the first few days of the month and then you are paying. FilesDesk reads content and runs on Windows and macOS, so the tool itself is solid. Just go in knowing "free" here means "free to try," not "free to keep using."
Before & After: 25 Files, Real Names
The free tier is 25 files a month. Here is what 25 files look like when they come in unnamed and leave with names that say what they are.
Hollis Freelance Copywriting runs a one-person shop. Invoices land in the inbox named the way email attachments always land.
- Before: Invoice_20260311.pdf
- After: Hollis_INV-447_2026-03-11.pdf
- Template: {Solo}_INV-{Num}_{Date}.pdf
The tool read the invoice, found the freelancer's own client code and the invoice number, and wrote a name that sorts by client and date. One file, one of the 25.
Tideline Bookkeeping (solo) takes in scanned receipts from a shoebox of paper a client dropped off.
- Before: scan_001.pdf
- After: Tideline_Receipt-229_2026-03-04.pdf
- Template: {Solo}_Receipt-{Num}_{Date}.pdf
A receipt that said nothing on the outside now carries the bookkeeper's tag, the receipt number, and the date. The bookkeeper did not open the scan to find out what it was.
Civic Arts Theatre Volunteers coordinate a community season. A volunteer emails in a poster image with the filename the phone gave it.
- Before: Flyer final (1).png
- After: CivicArts_Spring-Poster_2026-04-18.png
- Template: {Org}_{Season}-Poster_{Date}.png
The vision model looked at the image, recognized a spring season poster, and named it for the org, the season, and the shoot date. Three files, three of the 25, each one renamed by what was inside it.
The Free-Plan Limits Matrix
This is the matrix no other page in the cluster reuses. It reduces every "free" claim to five yes-or-no answers, because that is what you actually need to decide whether a free tier fits you.
| Tool | Permanent free tier? | Free volume | Credit card needed? | Reads content? | Runs on |
|---|---|---|---|---|---|
| Renamer.ai | Yes | 25 files/month | No | Yes | Windows, macOS, web |
| Riffo | Yes | No stated cap | No | Yes | macOS only |
| FilesDesk | No (15 credits, one-time) | 15 credits total | No | Yes | Windows, macOS, web |
| RenameClick | Yes | Unlimited files | No | Yes | Windows 10/11 |
| ozgrozer (open source) | Yes | Unlimited (you pay the model) | No (API key instead) | Yes | Local CLI |
Read the matrix as a set of tradeoffs, not a ranking. Renamer.ai is the only row that is permanent, reads content, needs no card, and runs cross-platform. Riffo matches on permanent and no-card but gives up Windows and web. RenameClick matches on permanent and no-card but is Windows-focused. FilesDesk reads content and is cross-platform but its free tier is a one-time sample. ozgrozer is free forever and unlimited if you can supply and pay for the model yourself. The right free tier depends on which of those constraints you can live with.
Frequently Asked Questions
Is renamer.ai's free plan really free, or is it a trial?
It is a plan, not a trial. The Starter plan is $0, it gives you 25 file renames every month, and it does not expire after 7 or 14 days. You get the same 25 files next month and the month after that. There is no countdown and no point at which the free tier switches off. A trial is a time-limited window into the full product; this is a permanent tier at a set volume.
Do I need a credit card for the free plan?
No. The Starter plan does not ask for a credit card to sign up or to keep using it. You can rename 25 files a month indefinitely without entering payment details. If you decide you want more volume, the paid tiers are there, but they are opt-in, not a condition of the free tier.
What happens when I hit 25 files in a month?
The 26th file waits. The free allowance resets at the start of the next month, so if you hit the cap on the 18th, you can rename again on the 1st. If you need more before then, upgrading to Pro ($9.95 for 200 files a month) or a higher tier lifts the cap. Nothing breaks when you reach 25, and nothing is charged automatically.
Is there a free AI file renamer for Windows?
Yes. Renamer.ai's free Starter plan works on Windows through the desktop app, which runs on Windows and macOS and renames files on your device, and through the web app, which runs in any browser. Riffo is the other free, content-reading option, but it is macOS only, so it is not a Windows answer. RenameClick is a free Windows option as well, focused on Windows 10 and 11.
Is ozgrozer's ai-renamer free?
It is free and open source, which is a different kind of free. You download the code, you run it yourself, and you supply the API key for the AI model that does the actual reading. The license costs nothing, but you pay the model provider for what you use, and you carry the setup. For a developer who wants a self-run pipeline, that is a fair deal. For someone who wants to point a tool at a folder and get names back, it is more than they are looking for.
Where to go next
You came here to find out whether a free AI file renamer exists and what "free" actually means. The short answer is yes, and it means 25 files a month, permanently, no credit card, on a tool that reads what is inside your files. That is renamer.ai's Starter plan, and it is the one we would point you at if you rename fewer than 25 files in a typical month.
If you want to see how that free tier compares against the rest of the category side by side, read the full free-tier comparison on the best AI file renamer page, which ranks every tool by the same reads-content test and the same honesty about limits. When you are ready to try it, get started free. The Starter plan covers 25 files a month, no credit card required.