Copywriting tools

Inkbreaker has two tools for copy: the CTA Strength Analyzer, which scores how hard your calls to action pull, and the Format Fit Checker, which checks your copy against the length and structure a given channel expects. Both are Pro tools. Both read your draft and leave it exactly as you wrote it.

You can open either one two ways:

• On its own page, from Tools then Copywriting.
• Inside the editor, from the tools panel, when your piece's writing type is Copywriting.

In the editor panel both tools work on your live draft, so you can check the section you just wrote without saving first. On its own page you can type or paste copy straight in (an email, an ad, a landing-page section), or load one of your saved pieces.

CTA Strength Analyzer

A call to action is the line that asks the reader to do something: "Download the guide", "Book a call", "Start your free trial". The analyzer finds the calls to action in your copy and scores each one.

Paste your copy (or load a piece) and select Analyze. The report has these parts:

• The score and band. One number for the overall strength of your calls to action, with a one-word read next to it: Strong, Solid, or Developing. Below it, a count of how many calls to action the tool found.
• Top opportunity. The single change most likely to lift response across all your calls to action. Fix this first.
• Each call to action, scored across six dimensions. Action verb (how direct the verb is), specificity (does it name the thing), benefit (does the reader know what they get), urgency (is there a reason to act now), friction (is there a reassurance nearby), and placement (where it sits in the piece). Each dimension shows a five-dot meter.
• What to fix. Under any call to action with a weak dimension, a short, concrete suggestion for each one, weakest first.

The analyzer rewards a plain, direct ask and flags manipulative urgency: three or more exclamation marks stacked on a countdown word reads as pressure, not persuasion, so the tool marks it.

It scores structure, not your offer. A strong score means the ask is clear and well placed. Whether the offer behind it is worth taking is your call.

Format Fit Checker

Every channel has its own shape. A meta description lives or dies around 155 characters. An email subject line wants to be short and scannable. A tweet has a hard limit. An ad headline is a handful of words. The checker measures your copy against those conventions so you write to the shape before you ship.

Paste your copy (or load a piece), pick one or more formats, and select Check fit. The checker covers 20 formats across six groups: Email, Social, Advertising, Website, Long-form, and PR. For each format you picked, the report shows:

• An overall verdict: Good fit, Acceptable, or Needs work.
• The measures that apply: word count, character count, and reading time, each marked pass (✓), close (~), or off (✗). A measure a format does not care about is left out.
• Structural signals for formats that have them, such as whether an email subject avoids ending punctuation, whether a landing page includes a call to action, whether a LinkedIn post breaks its first line early, or whether a press release ends with an "About …" section.

When you check several formats at once, a one-line summary tallies how many came back good, acceptable, or needing work, so you can see at a glance which channels your copy is ready for.

The checker reads length and structure, never meaning. It will not tell you whether the copy is good, only whether it fits the format you are writing for.

What these tools do not do

Neither tool writes, rewrites, or grades for you, and nothing is sent to an AI. The CTA Strength Analyzer reads verbs, placement, and the words around your ask; the Format Fit Checker counts and matches against fixed conventions. Both are about the shape of your copy, not its substance. The writing stays yours.