Remove duplicate lines
Clean logs, lists, or CSV snippets by deduplicating instantly while keeping accessible keyboard navigation.
Tips for clean datasets
Tackle noisy exports before loading them into spreadsheets or databases.
- Trim whitespace
- Removes leading/trailing spaces so “alpha” and “ alpha ” are treated the same.
- Case-sensitive
- Preserve differences for identifiers like “ID123” vs “id123”.
- Sort output
- Produce alphabetised results for easy scanning or version control.
Other Tools You May Need
Convert casing & naming styles
Use this section when you need consistent capitalization for titles, headings, UI labels, and code identifiers. Case Converter explicitly supports popular styles like Title Case, camelCase/PascalCase, snake_case, and kebab-case for standardizing content across docs and codebases.
Clean, normalize & fix encoding
Use this section when text looks “broken”—weird spacing, hidden characters, mixed Unicode forms, or accents causing mismatches in search and data joins. Hidden Character Detector explicitly finds invisible Unicode characters like zero-width spaces and BiDi control marks, and Unicode Normalizer supports normalizing to NFC/NFD/NFKC/NFKD (with options like trimming/collapsing whitespace).
Find, extract & replace patterns
Use this section when you need to locate patterns, extract portions of text, or apply bulk edits safely. Regex Find/Replace explicitly supports multiline mode and backreferences for group-based replacements (for example using \1 or $1).
Analyze writing & counts
Use this section to measure length, readability proxies, and repetition—great for SEO briefs, scripts, essays, and character limits. Word Counter reports words, characters (with/without spaces), sentences, paragraphs, and estimated reading/speaking time using 200 wpm for reading and 130 wpm for speaking.
Generate text & test strings
Use this section when you need filler copy, test data, or quick outputs for demos and QA. These tools are helpful for UI placeholders, form testing, and content templates.
Transform text layout
Use this section when you need to restructure text—joining lines, splitting blocks, quoting, rotating, or turning content into Markdown-ready structures. This is especially useful for preparing data for spreadsheets, code, or documentation.
You May Also Need
Remove Duplicate Lines Online Free
Remove duplicate lines online free is a practical fix for messy exports where the same entry shows up repeatedly across rows. The tool is useful for cleaning an email list before import, deduplicating a list of domains, or removing repeated log lines before sharing with a teammate. For best accuracy, start by deciding whether “Alpha” and “alpha” should be treated as the same value, because case sensitivity changes what counts as a duplicate. Whitespace is another common source of false uniqueness, so trimming leading and trailing spaces can prevent “ item” and “item ” from slipping through as separate rows. Sorting the results can make QA easier, especially when checking whether critical IDs or addresses are still present after cleanup. This page also highlights counting removed entries, which helps confirm the cleanup actually reduced noise rather than just rearranging lines. A quick workflow is to paste the raw list, enable only the strictness options needed for the context, then copy the unique output into a spreadsheet or CRM. When the list represents keys (order numbers, SKU codes, ticket IDs), a cautious pass that preserves case differences can reduce the risk of merging legitimately distinct items.
Privacy-first processing
WizardOfAZ tools do not need registrations, no accounts or sign-up required. Totally Free.
- Local only: There are many tools that are only processed on your browser, so nothing is sent to our servers.
- Secure Process: Some Tools still need to be processed in the servers so the Old Wizard processes your files securely on our servers, they are automatically deleted after 1 Hour.