Felo

Roblox Chat Filter Tester Online

Paste a message and see it run through a fixed five-phrase hash-mask filter that mimics a simple Roblox chat filter check. Unlike a bare two-box converter, it documents its matching rules and reports every phrase it masked, with position and mask length. Try it online.

What is Roblox Chat Filter Tester Online?

Roblox Chat Filter Tester Online is a conversational tool that takes a message you might send in Roblox and returns a filtered version, with a small fixed list of flagged phrases replaced by hash characters. It reproduces the behavior of a simple two-box phrase-mask converter: you give text, it gives back the same text with certain phrases blacked out by hashes. It is a simulation for quick self-checking, not a connection to Roblox's real moderation system.

Key Features

Fixed five-phrase mask list. The phrases Shit, Fuck, Damn, Kys and Kill yourself are replaced by hashes whose count matches the phrase length, so 'Damn' becomes '####' and 'Kill yourself' becomes '############'.
Documented matching rules. Matching is case-insensitive and applies to whole phrases wherever they appear, with the longest phrase checked first so 'Kill yourself' is not partially eaten by a shorter entry.
Per-match report. After the filtered text, you get a short list of what was masked, where it appeared and how many hash characters replaced it.
Exact preservation. Everything that is not a flagged phrase, including punctuation, emoji, spacing and line breaks, comes back unchanged.
Batch line check. Paste several lines and each line is filtered separately with a line-by-line summary, useful for checking a few draft messages at once.

How to Use

Paste or type the message you want to test into the chat. A single sentence is enough; multiple lines are also accepted.
Read the filtered text in the code block first. That is the exact output of the mask rules.
Check the match report underneath to see which phrases triggered a mask, then ask for a variant if you want to compare wording.

Example Use Cases

Checking a Roblox chat filter tester result before sending. You wrote 'well damn that was close' and want to see how a simple hash filter would render it before you post it in a game.
Comparing two phrasings with a Roblox filter test. Run 'kys' and 'kill yourself' side by side to see the different mask lengths and decide which wording to avoid entirely.
Batch checking Roblox tag checker drafts. Paste five short lines from a roleplay script and get each line filtered with a per-line summary so you can spot problem phrases quickly.

Tips for Best Results

Treat the output as a simulation of a fixed phrase list, not a prediction of what Roblox will actually tag. Real platform filtering is broader and changes over time.
If a phrase you expect to be masked is not, it is probably outside the five configured entries; ask for the match report to confirm what was found.
Keep the original text handy. The mask is one-way, so the hashes cannot be turned back into the original phrase.

FAQ

What input format does it accept?
Plain text of any length you can paste into the chat. Multiple lines are supported and filtered line by line. There is no file upload.

How accurate is the result?
It is exact for the five configured phrases under the stated rules: case-insensitive, whole-phrase matching, longest phrase first, hash count equal to phrase length. It does not model Roblox's real filter, so a clean result here does not guarantee a message will pass in-game.

How is this different from some free text tools?
Some free text tools give you two boxes and a Send button with no explanation of matching behavior. This agent states its rules, reports each match with position and mask length, and supports batch lines, while keeping the same core phrase-to-hash job.

Can I get the original phrase back from the hashes?
No. The mask is irreversible by design, and the agent will not guess what a run of hashes originally said.