Every guide gives you a character limit. Google does not count characters — it counts pixels, and a title of capital Ws truncates far sooner than one of lowercase i.
The limit is pixels, not characters
Search results are rendered text, so the cut-off is a width in pixels. Desktop is around 580px and mobile a little less; both have moved over the years and will again.
A character count is a proxy for that, and a rough one. In the site's own heading font, capital W is roughly three times the width of lowercase i, so two titles of identical length can differ by 30% in rendered width.
| Title | Characters | Roughly |
|---|---|---|
| How to Compress a PDF Without Losing Quality | 44 | Fits comfortably |
| WHY WORDPRESS WOOCOMMERCE WIDGETS WORK | 38 | Likely truncated |
| illicit minimalistписания in italic | 35 | Fits easily |
The practical rule: aim for 55 characters, check anything over 50 that is heavy in capitals, and never put a word you need read at the very end.
Google rewrites most titles anyway
This is the part that changes how you should think about the whole exercise. Google has rewritten title links since 2021, and studies consistently find it happens on somewhere around 60% of results.
It rewrites when your title is too long, keyword-stuffed, identical across many pages, missing, or simply when it judges the H1 or an internal link's anchor text to describe the page better for that particular query.
You cannot prevent it, and fighting it is wasted effort. What you can do is make the rewrite unnecessary: write a title that is already the best description of the page, and Google usually leaves it alone. The pages that get rewritten are mostly the ones that deserved to be.
Front-load the words that distinguish the page
A search result is scanned, not read. The first two or three words do nearly all the work, and they are the only part guaranteed to survive truncation.
- Lead with the specific thing. "Compress PDF" before "Free Online Tool" — the second phrase appears on ten thousand competing pages.
- Put the brand last, and keep it short. A suffix costs you its own length plus the separator on every page of the site.
- Do not repeat the category. "PDF Tools: Compress PDF | PDF Site" spends most of its width on one word.
- Match the query shape. If people search "how to compress a pdf", a title starting "How to Compress a PDF" matches what they typed.
This site's build enforces the arithmetic: the registry measures each title with the brand suffix included and refuses the build if the total exceeds 70. That caught two titles at 71 and 72 characters before they could ship truncated.
Title tag, H1 and OG title are three different jobs
They are frequently set to the same string, and they should not be.
The title tag is the search result link. It competes for a click against nine others and has a hard width budget.
The H1 is the page heading. The reader has already arrived, so it can be longer, more natural, and can drop the keyword repetition that the title needs.
The OG title is the social card. It has a different width again and no ranking role at all, so it can be the most conversational of the three.
A reasonable pattern: title tag "How to Compress a PDF Without Losing Quality", H1 "How to compress a PDF without losing quality", OG title the same as the title tag. Close, but tuned to each surface rather than copy-pasted.
What actually loses clicks
Three habits do more damage than any length error.
Duplicate titles. Twenty pages titled "Blog | Site Name" give Google nothing to distinguish them and give a searcher no reason to pick one. This is worth auditing across a whole site — every page needs a unique title.
Keyword stuffing. "PDF Compressor - Compress PDF - PDF Compression Tool" reads as spam to a person and triggers a rewrite from Google.
Mismatched promises. A title implying a free tool on a page that gates behind signup produces a click and an immediate bounce, which is worse for you than no click.
The Meta Tag Generator shows the rendered width as you type rather than counting characters, which is the measurement that decides whether the title survives.
Frequently asked questions
How long should a title tag be?
Aim for about 55 characters, but the real limit is roughly 580 pixels on desktop. A title heavy in capitals truncates sooner than one in lowercase, so check anything over 50 characters that uses a lot of wide letters.
Why did Google change my title?
Because it judged something else described the page better — often your H1 or an internal link's anchor text. It happens on roughly 60% of results and cannot be prevented. Writing a title that is already the best description is what makes the rewrite unnecessary.
Should the title tag match the H1?
Close, but not identical. The title competes for a click in a results page with a hard width budget; the H1 speaks to someone who has already arrived and can be longer and more natural. Copy-pasting one into the other wastes both.
Do I need my brand in every title?
It helps recognition but costs width on every page. Keep the suffix short and put it last. If a page has an unusually long title, dropping the brand from that one page is a reasonable trade.
Does keyword stuffing the title help?
No. It reads as spam to a person deciding whether to click, and it is one of the most reliable triggers for Google rewriting your title entirely. One clear phrase beats three variations of the same one.
What about duplicate titles across pages?
They are one of the most damaging title problems. Twenty pages titled "Blog | Site Name" give Google nothing to distinguish them and give a searcher no reason to choose. Every page needs a unique title; it is worth auditing site-wide.