How to use the lowercase converter
- 1 Type or paste your text into the left box, open a .txt file, or press Try an example.
- 2 Tick Keep codes with numbers in capitals to leave product codes and references alone, or Capitalise the first letter of each line for tidy lists.
- 3 The result appears on the right straight away and updates as you type.
- 4 Press Copy result or Download .txt, or Use as input to keep editing.
When to use lowercase
Lowercase suits tags, file names, URLs and email lists, where consistent case avoids duplicates and broken links. For normal reading text, convert afterwards with the Sentence Case Converter, and for headlines use the Title Case Converter.
- Lowercase email lists before removing duplicates.
- Keep product codes in capitals with the codes option.
- Web file names in lowercase avoid broken links on many servers.
Features
Instant conversion
Every capital letter becomes lowercase as you type or paste.
Keeps codes intact
Optionally leave words with numbers, such as ABC-123, in capitals.
Works with any language
Handles accented and non-English letters such as É, Ü and Ç.
When to use it
Caps Lock mistakes
Rescue a paragraph typed in capitals without retyping it. For proper sentences afterwards, use the Sentence Case Converter.
Tags and keywords
Make hashtags, keywords and tags consistent for social media or a website.
Email lists
Lowercase email addresses before importing them, so duplicates are easier to spot. Then clean the list with Remove Duplicate Lines.
File and folder names
Create lowercase names for web files, which avoids broken links on servers that care about case.
Related Text tasks
Frequently asked questions
What does a lowercase converter do?
It changes every capital letter in your text into its small letter version. Spaces, numbers, punctuation and line breaks stay exactly where they were.
Does it work with accented letters?
Yes. Letters such as À, É, Ö and Ñ are changed to à, é, ö and ñ, and most other alphabets with capital letters, such as Greek and Cyrillic, are handled too.
Can I keep some words in capitals?
Tick the option to keep codes with numbers in capitals, so references like ABC-123 or ID numbers stay as they are. For full control over case, use the Case Converter, which offers several styles.
Will my line breaks and spacing change?
No. Only letters change. Your paragraphs, line breaks and spacing are kept exactly.
Is lowercase text bad for SEO or emails?
Lowercase is fine for tags, URLs and file names. For emails and headings, people find sentence case or title case easier to read, so convert again if needed.
Why should website file names be lowercase?
Many web servers treat Photo.JPG and photo.jpg as different files. Using lowercase everywhere avoids broken images and links.
Can I convert a whole document?
Yes. Paste the text or open a .txt file. Even very long texts are converted in a moment.
Is my text stored or sent anywhere?
No. The conversion happens in your browser, so what you paste never leaves your device and nothing is saved on a server.
How this tool works. These text tools run entirely in your browser with plain JavaScript, so the text you paste never leaves your device and results update as you type. Each tool is tested with real text such as copied PDFs, emails, code, lists, emojis and non-English scripts before it goes live.
Built and reviewed by Hamza Farooq, founder and lead developer
· Last updated
· How we check our tools
· Report a problem