Prepare Lyrics for Udio Free — 350-Char Limit Formatter

Last updated: August 2026

Udio character limits

Udio is stricter on length. A practical working limit is around 350 characters for many generations; longer prompts can be truncated or produce weaker structure. LyricPrep includes a dedicated Udio - 350 limit and an “Auto-trim to limit” option.

Recommended workflow

Paste full lyrics
Set Cleaning Mode to Udio Strict or keep Suno/Udio Optimized
Set Character Limit to Udio - 350
Enable Auto-trim if you want the tool to cut at the limit
Clean, then copy the trimmed result

What to prioritize under 350 chars

One strong verse + chorus (or chorus + bridge)
Clear [Verse] / [Chorus] tags
No chords, no (x2) markers
Optional short performance hint on the first section only

Udio vs Suno: key differences

Character limit: Udio caps lyrics around 350 characters in some modes — far shorter than Suno. Every character must earn its place.
Structure matters more: with so little room, clear [Verse] / [Chorus] tags guide the arrangement.
Less room for hints: one short performance hint on the opening section; skip the rest.

Trimming strategy: what to cut first

When auto-trim needs to cut, cut in this order:

Second verse — keep verse 1 and the chorus; the song's identity survives.
Bridge — lovely, but expendable under 350 chars.
Repeated choruses — one chorus is enough for the model to learn the hook.
Ad-libs and filler lines — oohs and aahs go last... actually, they go first in the cut order. Keep the words that carry meaning.

Example: 500 characters → 340

[Verse - gentle acoustic guitar]
I remember the nights we drove till dawn
Your head upon my shoulder, singing our song
[Chorus - soaring]
I can't forget you, can't let go
You're the fire in the cold, the light I know
[Verse 2]
... (cut entirely)
[Bridge]
... (cut entirely)

Result: verse 1 + chorus + one hint = ~200 characters of pure signal.

What counts toward the 350-character limit

Everything in the lyrics box counts — not just the words:

Section tags: [Verse] is 7 characters, [Chorus - big finish] is 21. Short tags save real budget.
Spaces and line breaks: each blank line between sections costs a character. Single-spacing sections saves a handful.
Hints: a [Verse - soft female vocal, gentle piano] hint can eat 10% of your budget alone. Under 350 characters, keep hints to two or three words.

LyricPrep's character counter shows the running total as you clean, so you can watch the budget shrink in real time and stop trimming the moment you fit.

Rewriting vs trimming: making 350 characters sing

There's a difference between cutting words and rewriting for the limit. Trimming deletes; rewriting compresses. Rewriting almost always sounds better:

Merge short lines. "I remember / the nights we / drove all night" (34 chars) becomes "I remember the nights we drove all night" (44 chars with spaces) — wait, that's longer. Instead cut the weakest image: "I remember the nights we drove" (30 chars).
Pick one verse, not two. A full song has 2–3 verses; 350 characters fits one strong verse plus a chorus. Choose the verse with the most vivid imagery.
Front-load the hook. If the chorus is the memorable part, give it the characters. A great 100-character chorus beats a complete but bland full song.
Drop the bridge. Bridges are the first casualty of a tight budget. The song still works as verse → chorus → verse → chorus.

Testing and iterating on Udio

Because generations are cheap to start but cost attention, test in this order:

Generate once and listen for structure. Does it feel like a verse and a chorus, or one undifferentiated block? If the latter, your tags need work — not your words.
Check the vocal against your lines. Misheard words usually mean a line was too dense or the phrasing unnatural. Rewrite that line, not the whole song.
Only then tweak style. Once the words land, adjust genre/mood prompts. Changing style before lyrics are right masks lyric problems.

Keep each tested version saved (even in a text file) with a note on what you changed. When a tweak makes things worse, you'll want the previous version back.

Frequently asked questions

What is Udio's exact lyrics limit?

It varies by mode, but plan for ~350 characters. LyricPrep's auto-trim targets this so you don't have to count by hand.

Should I still remove chords for Udio?

Yes — even more important here, since wasted characters hurt more under a tight limit.

Can I fit a full song in 350 characters?

A short song: verse + chorus + maybe a 2-line bridge. Think of it as the song's essence, not the full arrangement.

Do spaces and line breaks count?

Yes — every character in the box counts, including spaces, line breaks, and the brackets in your tags. That's why short tags and single-spacing between sections matter at this budget.

What if my chorus alone is 200 characters?

Then it gets the budget and the verse gets what's left. The hook is what listeners remember — protect it first, then fit one verse around it. A 200-char chorus + 120-char verse + short tags fits.

Can I use the same cleaned lyrics for Suno and Udio?

Start from the same cleaned full version, then make a Udio-specific cut. Don't try to write one version that serves both — the 350-char version needs real rewriting, not just truncation.