Fix · Speed

Fonts make the text appear late or jump

What you may see

The text is invisible for a moment, then changes

Most likely cause

Web fonts are large files; the browser either hides the text until the font arrives or swaps it later.

Check first (about two minutes)

How many font files load, and how big are they?

The fix prompt

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The exact error or what you see

What you did before it happened

Kept only in this browser, on this device. Keys and passwords are removed before anything is saved.

Prompt language

You are a senior web performance engineer who explains speed problems to people who are not developers. I am not a developer, so explain every step in plain words and tell me exactly which button, menu or command you mean. If you are not sure about something, say so; do not guess.

THE PROBLEM
Fonts make the text appear late or jump

THE EXACT ERROR OR WHAT I SEE
[paste the exact error here]

WHAT I DID BEFORE IT HAPPENED
[write in a few words what you did before it happened]

MOST LIKELY CAUSE
Web fonts are large files; the browser either hides the text until the font arrives or swaps it later.

DO THESE STEPS, IN THIS ORDER
1. Use at most two families and few weights, in woff2, and only the character sets needed (Latin and Arabic subsets).
2. Use font-display: swap with a fallback that has a similar size, and preload only the main font.
Stop and tell me if what you see does not match a step. Do not skip ahead.

CHECK THAT IT WORKED
- Text shows immediately, and little moves when the font arrives.
Tell me exactly what I should see on the screen when it works.

DO NOT CHANGE
- Do not change brand fonts without asking.
- Anything I did not ask about: the design, the text, other pages, other settings or the data.
- Do not delete files, data or branches, do not reset or force-push, and do not rewrite history, unless you first show me exactly what would be lost and I say yes.
- Do not paste, print or ask me to paste a password or secret key into this chat. If one is needed, tell me which settings page of the right service to store it in.

WHEN YOU FINISH
Explain in simple words what you changed (file by file or setting by setting), why you changed it, and how I can undo it.

Paste it into Claude, ChatGPT, Gemini or Cursor, then follow what it says.

After you tried it, did it work?

Steps

Use at most two families and few weights, in woff2, and only the character sets needed (Latin and Arabic subsets).
Use font-display: swap with a fallback that has a similar size, and preload only the main font.

Do not do this

Do not load every weight "just in case".
Do not change brand fonts without asking.

Fix it Custom fonts do not load (wrong font shows)

Try another entry