Protect PDF with a Password: Free, No Upload
Add a password to a PDF for free.
Keep the password somewhere safe. Nobody, including us, can open the PDF without it.
Pro
Everything you already do here stays free.
Working with lots of files?
Avalon Pro adds bigger batches (up to {pro} files), one-click ZIP download, saved presets and your own file names.
Bigger batches are part of Avalon Pro
The free version takes up to {free} files at once. Avalon Pro takes up to {pro} in one batch, still processed on your device.
Bigger batches are part of Avalon Pro
The free version takes up to {free:batch_mb} in one batch. Avalon Pro takes up to {pro:batch_mb} at once, still processed on your device.
More pages in one run are part of Avalon Pro
The free version reads up to {free:pages_per_run} pages in one run. Avalon Pro reads up to {pro:pages_per_run} pages in one run and up to {pro} files at once.
One-click ZIP download is part of Avalon Pro
Download all still saves every file for free, one by one. Avalon Pro puts all your results in a single ZIP file.
Saved presets are part of Avalon Pro
Save your settings under a name and load them again in one click, on this device.
Custom file names are part of Avalon Pro
Choose how your output files are named, for example {name}-{n} or {date}-{name}.
A logo in your QR code is part of Avalon Pro
Put your logo in the middle of the code. The error correction goes to the highest level so phones can still read it.
Bulk QR codes are part of Avalon Pro
Paste or upload a CSV list and get one QR code per row, named from a column, all in one ZIP file.
Batch watermarks are part of Avalon Pro
Add your name, website or logo to every image in the batch, with the position, size and opacity you choose.
Metadata removal is part of Avalon Pro
Strip location, camera and date details from every photo before you share it, and see exactly what was removed.
Saved scenarios are part of Avalon Pro
Save your numbers under a name, compare two scenarios side by side, and export them all as a CSV file.
MP3 tags are part of Avalon Pro
Write the title, artist, album, year and a cover image into every MP3 you extract, so music players show them properly.
Page numbers are part of Avalon Pro
Number every page when you save: choose the position, the format (1, Page 1, 1 / 12 or Page 1 of 12) and the first number. Everything else in this tool stays free.
A/B thumbnail variants are part of Avalon Pro
Design up to 3 versions of your thumbnail, see them side by side in a mock feed, and download them all in one ZIP file. Everything else in this tool stays free.
Saved designs are part of Avalon Pro
Save your layouts, fonts and colors under a name and reuse them for every video, on this device.
Working on several PDFs at once is part of Avalon Pro
The free version works on one PDF at a time. Avalon Pro takes up to {pro} PDFs in one go and saves them as one ZIP file.
Bulk barcodes from a list are part of Avalon Pro
Paste or upload a CSV list and get one barcode per row in a single ZIP file, or a printable label sheet PDF with a different barcode on every label. Single barcodes and full sheets of one barcode stay free.
Saved details and invoice numbering are part of Avalon Pro
Save your business details and clients, number invoices automatically, and export a CSV list of every invoice you issue, all stored on this device. Making and downloading invoices stays free.
Longer documents are part of Avalon Pro
The free version converts documents of up to {free:pages_per_file} pages. Avalon Pro converts up to {pro:pages_per_file} pages per file.
Converting several files at once is part of Avalon Pro
The free version converts one file at a time. Avalon Pro takes up to {pro} files in one go and saves them as one ZIP file.
Longer recordings and batches are part of Avalon Pro
The free version transcribes one file at a time, up to {free:audio_minutes} long. Avalon Pro takes recordings up to {pro:audio_minutes}, up to {pro} files in one go, and saves every transcript in one ZIP file.
Longer videos and batches are part of Avalon Pro
The free version burns subtitles into one video of up to {free:burn_minutes}, and SRT and VTT downloads stay free. Avalon Pro burns subtitles into videos up to {pro:burn_minutes} long, up to {pro} videos in one go, with saved subtitle styles.
Checking many domains at once is part of Avalon Pro
The free checker runs the same full check on one domain at a time. Avalon Pro checks up to {pro} domains in one go and exports every result as a CSV file.
Checking many metadata files at once is part of Avalon Pro
The free validator runs the same full check on one file at a time. Avalon Pro checks up to {pro} metadata files in one go and exports every certificate, expiry date and issue as a CSV file.
Memes from a caption list are part of Avalon Pro
Paste a list of captions and get one meme per line on this picture, up to {pro:rows} at a time, all in one ZIP file. Making and downloading single memes stays free.
Counting many documents at once is part of Avalon Pro
The free counter runs the same full count on one document at a time. Avalon Pro counts up to {pro} documents in one go, shows them in one table and exports every count as a CSV file.
Bigger PDFs are part of Avalon Pro
The free version opens PDFs up to {free:file_mb}. Avalon Pro opens PDFs up to {pro:file_mb}, still on your device.
Bigger files are part of Avalon Pro
The free version takes one file up to {free:batch_mb}. Avalon Pro takes up to {pro} files in one go, up to {pro:batch_mb} in total, and saves the results as one ZIP file.
Bigger files are part of Avalon Pro
The free version takes up to {free:batch_mb} at once. Avalon Pro takes up to {pro:batch_mb} at once, with exactly the same results.
Bigger files in High quality are part of Avalon Pro
Free High quality conversions take files up to {free:server_mb}. Avalon Pro takes files up to {pro:server_mb}, with the same quality. Standard conversion in your browser stays free for files up to {free:batch_mb}.
Saved signatures are part of Avalon Pro
Save up to {pro:saved} signatures, initials or stamps on this device and add them to any PDF in one tap. Drawing, typing and signing stay free.
One-tap sharing sizes are part of Avalon Pro
Pick Discord, Gmail or a website and the video is compressed to fit, with the right resolution set for you. Choosing your own size in MB stays free.
Bigger and longer videos are part of Avalon Pro
The free version compresses one video at a time, up to {free:file_mb} and {free:video_minutes} long. Avalon Pro takes videos up to {pro:file_mb} and {pro:video_minutes} long, up to {pro} at once, still on your device.
Longer texts are part of Avalon Pro
The free version voices up to {free:text_chars} at a time. Avalon Pro voices up to {pro:text_chars} in one go, with the same voices, and can save one audio file per paragraph.
One file per paragraph is part of Avalon Pro
Get a separate audio file for every paragraph, numbered in order and saved as one ZIP, ready to drop onto a video timeline. Making a single audio file stays free.
Drop shadows are part of Avalon Pro
Put a soft shadow under the cutout so the product sits on the background instead of floating. The cutout itself, the brushes and full-resolution downloads stay free.
Your own background picture is part of Avalon Pro
Place the cutout on any photo of yours, such as a room, a studio backdrop or a brand image. White, color and blurred backgrounds stay free.
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Working on {name}…
{count} {count:PDF|PDFs} ready. Type a password, then press Protect PDF.
Done: {count} protected {count:PDF|PDFs} ready to download.
{count} {count:file|files} skipped: only PDF files can be protected here.
The free version protects one PDF at a time, so the first one was added.
Only {max} PDFs fit in one batch. Protect these first, then add the rest.
{name} was not added: the limit is {mb} MB.
The PDF tool could not load. Check your connection and reload the page.
Type a password first.
This password is too long for a PDF. Use up to 127 letters, numbers and symbols (about 40 in Korean, Chinese or Japanese).
The two passwords are different. Type the same password in both boxes.
This PDF already has a password or restrictions. Remove them first with the unlock PDF tool (you need its current password), then protect the unlocked copy.
This file is not a valid PDF or it is damaged.
Reading the PDF…
Adding the password…
Password added (AES-256)
Free, no sign-up and no watermark. The PDF and the password stay on your device: nothing is uploaded.
What this tool does
It adds a password to a PDF. Anyone who opens the file has to type the password first, so you can email a contract, a payslip or a medical report as a PDF and send the password separately, by text message or phone. It is free, needs no account and adds no watermark.
- AES-256 encryption, the strongest the PDF format supports
- Runs in your browser: the file and the password are not uploaded
- Everything else stays the same: pages, text, pictures, links and form fields
How to use it
- Drop a PDF into the box above, or click it to choose one.
- Type a password, then type it again.
- Press Protect PDF, then Download PDF.
Tips
- Choose a long password. Three or four unrelated words are easier to remember and harder to guess than a short mix of symbols.
- Send the password another way. If the PDF goes by email, share the password by text message or phone, not in the same email.
- Need to remove a password later? Use the free unlock PDF tool. You will need the password.
- Combining files first? Use the free merge PDF tool, then protect the merged PDF.
- Need to sign it before sending? Use the free sign PDF tool first, then add the password.
Free, Pro and Pro+
| Free | Pro | Pro+ | |
|---|---|---|---|
| PDFs at once | 1 | 50 | 50 |
| Size per batch | 100 MB | 500 MB | 500 MB |
| Same password on many PDFs at once | — | Yes | Yes |
| Download all as one ZIP | — | Yes | Yes |
| Custom file names | — | Yes | Yes |
| Result quality | The same on every plan | ||
| Server tools paid with credits | With a credit pack | With a credit pack | 300 credits every month |
Pro+ credits pay for server tools: higher-accuracy speech to text, higher-accuracy auto subtitles and fast server voices. A credit pack (150 credits, valid for 12 months) works on any plan. Compare plans.
Frequently asked questions
Is this PDF password tool free?
Yes. Protect as many PDFs as you like, one at a time, up to 100 MB each. No sign-up, no email and no watermark.
How strong is the protection?
The PDF is encrypted with AES-256, the strongest encryption the PDF format offers. Without the password, the pages cannot be opened or read. A long password (12 characters or more, or a few unrelated words) is much harder to guess than a short one.
Is my PDF uploaded anywhere?
No. The encryption runs in your browser, so the file and the password stay on your device.
Will the PDF open on other devices?
Yes. Any common PDF reader asks for the password and then opens it: Adobe Acrobat Reader, Preview on a Mac, Chrome, Edge, and the PDF viewers on iPhone and Android.
I forgot the password. Can you recover it?
No. Nobody can, including us: the password is never sent to us and good encryption cannot be reversed. Keep a copy of the original PDF or store the password in a password manager.
My PDF already has a password. Can I change it?
Remove the old password first with the free unlock PDF tool (you need to know it), then add the new one here.
Are there limits?
One PDF at a time, up to 100 MB. Avalon Pro protects up to 50 PDFs at once with the same password (up to 500 MB in total) and saves them as one ZIP file.