Flint PDF

Free plan Web

What Flint PDF is

Flint PDF is a browser-based toolkit for working with PDF files. Its editor changes PDF text and supports comments, highlights, arrows, and freehand notes. You can also sign, redact, organize, compress, and convert documents. Conversion works from PDF to Word, Excel, PowerPoint, PNG, JPG, and EPUB, and common document and image formats can be converted into PDF. Flint says its redaction removes the underlying text and image content rather than only covering it. The service runs on the web without installation. Files are tied to your account, processed for the requested action, and not shared, according to the home page. Its conversion page says transfers are encrypted and files are not used for training. The free plan lets you process and preview PDFs without a credit card, while exporting completed files requires Pro. Free uploads have a smaller size cap than the 250 MB limit stated for Pro accounts.

Who it suits

Flint PDF suits people who need browser-based PDF editing, annotation, conversion, or redaction. It also fits users who want to preview results on a free plan before exporting.

What it does well

Edits PDF text and adds varied annotations
Converts PDFs to several office and image formats
Redaction removes underlying text and image content
Runs in a browser without installation
Free plan requires no credit card

What to know first

Exporting completed files requires Pro
Free uploads have a smaller size cap
No free trial is offered

Plans

Plan	Billed and limits	Price
Free	Free; no credit card required · Process and preview PDFs in the browser · Exporting completed files requires Pro	Free
Flint Pro 24-hour pass	One-time, non-renewing purchase; price not published on the pages reviewed · Unlocks every Pro feature for 24 hours from activation	On request
Flint Pro annual	Annual subscription; price not published on the pages reviewed · PDF uploads up to 250 MB	On request

As flintpdf.com lists them, read 11 Oct 2026. The maker's own page has the final word.

Verdict

Flint PDF combines editing, annotations, redaction, organization, compression, signing, and conversion in one web service. The free plan supports processing and previewing, but exporting requires Pro and free uploads have a smaller limit.

Facts from Flint PDF's own pages

Annotation tools: Yes · flintpdf.com, 20 Sept 2026
Browser-based: The product runs in a browser and says there is nothing to install. · flintpdf.com, 11 Oct 2026
Company: Flint PDF is a product by General Software, a trading name of Workshop Operations Ltd, registered in England and Wales as company 14842982. · flintpdf.com, 11 Oct 2026
Conversions: It converts PDFs to Word, Excel, PowerPoint, PNG, JPG, and EPUB, and supports converting common document and image formats to PDF. · flintpdf.com, 11 Oct 2026
Editing and annotation: Its editor lets users change PDF text and add comments, highlights, arrows, and freehand notes. · flintpdf.com, 11 Oct 2026
Encryption and training: The conversion page says files are transferred over an encrypted connection and are not used for training. · flintpdf.com, 11 Oct 2026
File size limit: The conversion page states that Pro accounts can convert PDFs up to 250 MB; free uploads have a smaller size cap. · flintpdf.com, 11 Oct 2026
Free plan: Yes · flintpdf.com, 20 Sept 2026
OCR: Yes · flintpdf.com, 20 Sept 2026
PDF conversion: Yes · flintpdf.com, 20 Sept 2026
Privacy: The home page says files are tied to the user's account, processed only for the action requested, and never shared. · flintpdf.com, 11 Oct 2026
Product: Flint PDF is an online toolkit for editing, annotating, signing, redacting, organizing, compressing, and converting PDFs in a browser. · flintpdf.com, 11 Oct 2026
Redaction: Flint says its redaction tool removes underlying text and image content from the PDF rather than merely placing a box over it. · flintpdf.com, 11 Oct 2026
Support and refunds: The refund policy directs customers to [email protected] and says it aims to respond to refund requests within two business days. · flintpdf.com, 11 Oct 2026
Supported platforms: web · flintpdf.com, 20 Sept 2026
Text editing: Yes · flintpdf.com, 20 Sept 2026
Try before paying: Users can process a PDF and inspect the result without paying, but downloading or exporting the finished file requires Pro; the maker says this is not a time-limited trial. · flintpdf.com, 11 Oct 2026

Where Flint PDF stands on Freedom251

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