Four tools. No signup, no upload, no catch.

Each one runs entirely inside your browser tab. Your files never reach a server, because there is no server. We built them to solve problems we kept running into, and left them free.

Redact PDF

LiveTry it here, or open it in its own tab.
Redact PDF with a synthetic invoice open in its editor, in Mark mode: three black redaction boxes drawn over the bill-to block, the account number and the total, and the editor reporting 3 redactions marked

Redact PDF couldn’t load here. Its site does not allow embedding yet, so this is a recording of it at work.

Open Redact PDF (opens in a new tab)
Redact PDF with a synthetic invoice open in its editor, in Mark mode: three black redaction boxes drawn over the bill-to block, the account number and the total, and the editor reporting 3 redactions marked

Redact PDF

Live

Black out text in a PDF and have it actually gone, not covered by a rectangle you can drag off. Export rasterises every marked page, so nothing stays selectable underneath.

redactpdffree.com (opens in a new tab)
My SE Tax Calc on a synthetic scenario: $60,000 of 1099 revenue and $5,000 of expenses for a single filer, and under it the federal estimate split into self-employment and income tax, with four quarterly payments

My SE Tax Calc

Live

Self-employment tax, quarterly estimates, 1099 against W-2, and mileage deduction. Four calculators on one Schedule SE engine.

mysetaxcalc.com (opens in a new tab)
Why

Why they are free

Partly because they cost us almost nothing to run. A static page with no backend has no usage bill.

Mostly because they are the argument. Anyone can describe how they build. These are four things you can open right now and use, which is a harder claim to fake.

Need something like this for your business?

Start a project
Kolkata, India · We reply within one business day.