RedditRabbit: Reddit posts rewritten to fit each subreddit

01 / Overview

About RedditRabbit

02 / The challenge

What RedditRabbit needed to solve

Posts that miss a subreddit's rules or tone get removed or ignored. The rewrite had to fit the community without losing the person behind it.

1. 01

   Moderators remove posts that break a subreddit's rules or format, often within hours.

2. 02

   Rewrites had to reflect how a specific community writes while keeping the author's meaning and sounding like a person.

3. 03

   Spam, ads, product pitches and affiliate links had to be refused rather than polished.

4. 04

   Users needed to see exactly what changed and why before they posted.

5. 05

   The tool had to be usable without an account and easy to find through search.

03 / What we built

How we built RedditRabbit

We built a web app that runs each draft through a set of checks, scores it, rewrites it with GPT-4o and then verifies the rewrite with a second model.

• 01

  Safety checks before rewriting

  Each draft passes a text check, a promotion filter, a crisis check and a relevance check. Crisis posts get a helpline instead of a rewrite, and promotional posts are blocked.

• 02

  100-point post score

  The original post is scored on length, readability, tone, clear ask and red flags. Weak areas become specific instructions for the rewrite, and the revised post is scored the same way.

• 03

  Meaning check with a second model

  A second model compares the original and the revision. If it sees changed meaning or an invented claim, the rewrite runs again in a stricter mode.

• 04

  Side-by-side diff and change list

  Users see the original and revised post with changes highlighted, plus a numbered list such as moving the main question into the first line. They can copy, edit or start over.

• 05

  Titles, flair and timing

  Each result includes direct, curiosity and specific title options, a flair suggestion and the best time to post for that subreddit.

• 06

  Predicted community response

  Based on live comment patterns from the subreddit, the tool predicts the kinds of replies a post is likely to get, along with a pre-submission checklist.

• 07

  Trend to post ideas

  Users with no draft can browse trending topics in their niche, add one sentence with their own take, and get a complete post for a specific community.

• 08

  Free, Basic and Pro tiers

  Visitors get one analysis a day with no account, free accounts get unlimited analyses and saved posts, and Pro adds bulk cross-posting, custom tone profiles and API access through Stripe.

04 / The results

What changed for RedditRabbit

RedditRabbit takes a draft from paste to a checked, explained rewrite in one request, with free, account and paid tiers wired to Stripe.

• Users can see every change and the score difference before they post, so nothing is a black box.
• Safeguards keep promotion out and route crisis posts to help instead of rewriting them.
• A nightly job keeps community data current, so rewrites follow how each subreddit behaves now.
• Prompts, model names, token limits and thresholds live in one constants file, which makes tuning quick.