PDF Studio
Perpetual-licence PDF editor for Windows, Mac and Linux, now sold as Xodo PDF Studio.
Operated by Apryse
Where your files are processed
No server involved
Installed desktop application for Windows, macOS and Linux. The vendor also sells adjacent server and online products, but the editor itself runs locally.
It is a desktop application, and the vendor documents offline processing on the machine. That is a vendor statement rather than a tested guarantee that no server is involved. The current vendor documentation distinguishes a watermarked free demo from a full-access watermark-free trial that requires a credit card, and monthly and yearly subscriptions are offered alongside perpetual licensing.
What it does
A long-running cross-platform PDF editor from Qoppa Software, now sold as Xodo PDF Studio and linked to Apryse. It edits page content including inline text reflow, designs and fills forms, runs OCR, batch-processes documents, validates and converts PDF/A and PDF/X, handles accessibility tagging, does prepress imposition and printer marks, applies digital signatures, and includes a sanitise tool for stripping hidden data.
Best for: Windows, macOS and Linux users who want one licence covering two machines across different operating systems and prefer a one-time fee to a subscription.
Worth knowing: Its redaction tool removes page content only — form fields and annotations need a separate procedure. The product is mid-rebrand from Qoppa to Xodo, so licensing and support routes may change underneath you. The demo and the trial have different output conditions and are recorded separately rather than as one unknown trial watermark. Current device allowances should be verified rather than copied from the older two-machine comparison. Redaction and sanitisation remain separate workflows with the existing page-content limitation, and the vendor’s claims of permanent removal are documented rather than presented as an independent security test. Nothing about rebranding is taken as evidence of future licensing or support instability.
Details, and where each comes from
Vendor statements, our own reading of their pages, and the things nobody has established yet, each answered separately. Where we have not confirmed something it says so rather than guessing, and a row nobody has established is greyed out.
- Versions covered
- Windows · macOS · Linux
- Website
- qoppa.com
- Requires an account
- Not verified
- Free tier
- No
- Watermark on trial output
- Not verified
- Maximum file size
- Not verified
- Batch processing
- Yes
- Data residency
- Not verified
- Open source
- No
- Self-hostable
- No
- Licence
- proprietary
- Redaction
- Removes the content
- Programmatic access
- None
- Last availability check
- Responded in 710 ms 16 October 2026
Checked automatically by our own runner, not reported by the vendor. 100% of our last 30 checks got a response.
What the redaction verdict rests on
From the vendor's own documentation, read 22 September 2026. Not tested by us.
“This is why it’s extremely important to use the proper redaction tools, like those provided in PDF Studio, that will remove the underlying content rather than only blurring it.”
What that does not establish: The vendor’s own knowledge-base article, not a test we ran, and it is dated 17 February 2017 — so it describes the product as it was then, and nothing here establishes that the current release behaves identically. The claim is also comparative: it says PDF Studio removes where pixelation does not, which is not the same as describing how it removes.
https://kbpdfstudio.qoppa.com/why-pure-redaction-is-better-than-pixelating-or-blurring/
What the vendor says
Claims are labelled rather than repeated as fact. Where we have checked something ourselves, it says so and shows when. Checked means we read the vendor's own page and it says what we recorded — not that we tested the behaviour, unless the note says we did.
-
“This is why it's extremely important to use the proper redaction tools, like those provided in PDF Studio, that will remove the underlying content rather than only blurring it.”
Checked by us — the source says this Read 22 September 2026
Confirmed verbatim. The article says: "This is why it's extremely important to use the proper redaction tools, like those provided in PDF Studio, that will remove the underlying content rather than only blurring it." The claim is that sentence unaltered, and the surrounding argument — that pixelated or blurred text can be recovered — is the reason it gives. Worth recording what kind of source this is: it is a February 2017 opinion piece about why blurring is unsafe, not product documentation, so it supports what Qoppa claims PDF Studio does rather than what it has been observed to do. Their own linked how-to, 'How to Properly Redact a PDF', is the operational page and was not read for this claim.
Standing: Re-read and matched byte for byte
Check it yourself: the source, the SHA-256, and how we checked
- From
- the text a browser renders
- SHA-256
- 49ee42eb1b32e98caf806a99ee93853176db3cf7502d866d6e3a6d36cd17f0cc
How we checked: Re-verified verbatim on 2026-09-22: https://kbpdfstudio.qoppa.com/why-pure-redaction-is-better-than-pixelating-or-blurring/ re-rendered in headless Chrome with scripts/render-page.mjs and the claim's wording found in the rendered text. Originally verified on 2026-09-21. sourceHash is the SHA-256 of the re-rendered text, held as rv-kbpdfstudio-qoppa-com-why-pure-redaction-is-better-than-pi-94f8e0c0.txt.
-
“1/3 the price of Adobe Acrobat. Deploy to more users for same price”
Checked by us — the source says this Read 22 September 2026
Confirmed verbatim: both halves appear unaltered as one line of the page's summary, and the fuller sentence above it corroborates the pricing comparison — "at one third the price of Adobe® Acrobat® and maintains full compatibility with the Adobe PDF Standards". The claim is a comparative price assertion, which means it is checkable in principle against Adobe's published list price and is not checked here; neither figure appears on this page, and none was sought, because the claim's own source states the ratio rather than the numbers. The second half, "Deploy to more users for same price", is a licensing-structure claim rather than a price one. Recorded as the vendor's wording; no purchase was made and no control was run.
Standing: Re-read and matched byte for byte
Check it yourself: the source, the SHA-256, and how we checked
- From
- the text a browser renders
- SHA-256
- ce87b724e7058829e0ce4d1df9e857d90357790772bea5c696125db60898f5fa
How we checked: Re-verified verbatim on 2026-09-22: https://www.qoppa.com/pdfstudio/ re-rendered in headless Chrome with scripts/render-page.mjs and the claim's wording found in the rendered text. Originally verified on 2026-09-21. sourceHash is the SHA-256 of the re-rendered text, held as rv-www-qoppa-com-pdfstudio-6869ce41.txt.
Each claim is quoted from the vendor's own pages. This section describes what we have and have not checked — it is not a judgement about anyone.
Sponsorship is distribution, not an endorsement or a promise of search rankings, AI citations, traffic, or sales. This listing is a free entry, compiled from published sources.
Related reading
- Checking a PDF for accessibility — what makes a PDF accessible, and how it is checked.
- Which PDF tools really redact — which tools remove the content rather than cover it.
- Which PDF tools keep your file on your machine — what we count as processing on your own device.