Does it split every long sentence?

Only the ones that are too hard for the reader you pick. A long sentence that is already clear stays as it is.

Will it drop an exception or a condition?

No. Every must, may, unless, only if, deadline and number is checked against the original. If the plain version loses one, you get the original back.

Can I simplify a whole document?

Yes. Paste a document, a web address or a PDF; only the passages that are too hard change.

Sentence simplifier

One long sentence in, plain sentences out

Paste a sentence that takes three reads. The sentence simplifier splits it where it runs on, swaps hard words for plain ones, explains a term that has to stay, and keeps every condition, number and exception.

Make it readable

6 free pages a month. No card.

Complex text becomes larger, simpler lettering.

Made for

One clause in a contract, policy or letter
Instructions people keep getting wrong
Academic sentences for readers outside the field

Before and after

Example: 38 → 36 words · every fact kept

Original

Employees who, having completed their probationary period, wish to request a transfer to another department shall submit the relevant form no later than 14 days prior to the requested start date, subject to approval by both department heads.

Result

Once your probation period is over, you can ask to move to another department.

Send the form at least 14 days before the date you want to start.

Both department heads have to approve the move.

Kept: after probation
Kept: 14 days before
Kept: both department heads

How Simplify works

Step 01
Every passage is rated
On one six-step scale for every language, from very simple to expert, and checked for unexplained terms and instructions that read two ways.
Step 02
Only hard passages change
Passages already at your reader's level stay word for word.
Step 03
Terms are explained, not removed
A term the reader will meet elsewhere stays, with a short plain explanation the first time.
Step 04
Meaning is checked
Every must, may, unless, deadline and number has to survive, or the passage keeps its original words.

Options

Reader: General audience, customers, patients, second-language readers, young readers, newcomers, decision-makers or specialists, or describe your own.
Level: Very simple (A1) to expert (C2); simpler or more precise.
Write in: Keep the language, or translate while simplifying.

From code, terminal or agent

# REST API
curl https://readable.md/api/v1/transform \
  -H "Authorization: Bearer $READABLE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "tool": "simplify", "text": "…", "audience": "customers" }'

# Command line
readable simplify letter.pdf --audience customers

# MCP tool: simplify

API, MCP and CLI docs

Questions

Does it split every long sentence?: Only the ones that are too hard for the reader you pick. A long sentence that is already clear stays as it is.
Will it drop an exception or a condition?: No. Every must, may, unless, only if, deadline and number is checked against the original. If the plain version loses one, you get the original back.
Can I simplify a whole document?: Yes. Paste a document, a web address or a PDF; only the passages that are too hard change.