Text difference checker
Compare two texts and inspect inserted, removed and unchanged lines. Use Text difference checker locally with practical instructions, output settings and format limits.
Text difference checker
Compare two texts and inspect inserted, removed and unchanged lines. Unchanged lines, additions and removals are represented separately. Paste the comparison into Second text or upload exactly two files in original/revised order. Paste UTF-8 text into the main input or upload a matching file. A selected file takes priority over the pasted text.
- Compare an original and revised text file.
- Inspect added, removed and unchanged lines.
- Download a line-based change report for review.
How to use Text difference checker
Provide the source
Paste UTF-8 text into the main input or upload a matching file. A selected file takes priority over the pasted text. For comparison, enter the revised value in the second input or select two source files in the intended order. Read the operation note before starting, because supported syntax and file limits are part of the result contract. The original file is not overwritten or renamed by this workflow.
Choose the intended result
Review the controls for Second text. Change settings according to the file or text you actually supplied. Defaults are a starting point rather than a promise that every source uses the same conventions. Unchanged lines, additions and removals are represented separately. Paste the comparison into Second text or upload exactly two files in original/revised order.
Create and inspect the output
Use the main action button to run text difference checker. Local processing checks the source and reports malformed or unsupported inputs. A completed job appears in Your results, with a download action and a preview when the output supports it. If the operation fails, read its message and correct the source or settings before retrying; changing only a filename does not change file contents.
Save and verify the result
Download the finished output and open it in the application or workflow that will consume it. Enter or upload the source, choose settings, then create and review your result. Check the values, layout, encoding or parsed structure relevant to your task. Keep the source when you may need another set of settings later. Temporary job downloads are session-owned and expire; saving your own copy is the way to retain a result.
Understand the settings
- Second text
- Second text is applied to this tool job. Use the syntax shown in the workflow, especially for JSON field mappings. Leave it blank only when the field is described as optional.
Try text difference checker with a small source
Try this source: First line Original line. Use the initial settings, inspect the result and then change one setting to understand its effect. Unchanged lines, additions and removals are represented separately. Paste the comparison into Second text or upload exactly two files in original/revised order.
Check your result
Enter or upload the source, choose settings, then create and review your result. UTF-8 text up to 1 MB. Processing stays on this computer. Inputs are never executed. Open the saved output in the app or workflow where you plan to use it. Check one representative result before repeating the same settings with more files. The original files stay unchanged.
What to know before you start
- Files are processed on this device. Browser memory and engine-specific limits apply. Save results before reloading.
- UTF-8 text up to 1 MB. Processing stays on this computer. Inputs are never executed.
- Upload up to 20 files, at least 1 with a combined size of at most 100 MB. The completed output must fit within 200 MB.
- Pasted text and uploaded text have operation-specific UTF-8 byte limits. Productivity tools accept up to 1 MiB (1,048,576 bytes); non-ASCII characters can use several bytes each. If a file is selected, it takes priority over pasted text.
- Selections and completed jobs stay available while you navigate inside this tab. Use My files to revisit results. Reloading or closing the tab clears the workspace; download results you want to keep first.
Text difference checker: common questions
What does Text difference checker produce?
Compare two texts and inspect inserted, removed and unchanged lines. Unchanged lines, additions and removals are represented separately. Paste the comparison into Second text or upload exactly two files in original/revised order.
Which source should I use?
Paste UTF-8 text into the main input or upload a matching file. A selected file takes priority over the pasted text. Supported file extensions are txt, md, markdown, json, csv, html, htm, css, js, sql, xml, yaml. The processing engine checks actual contents; a matching extension alone does not make malformed content valid.
Why did this input fail?
UTF-8 text up to 1 MB. Processing stays on this computer. Inputs are never executed. Check syntax, required inputs and the ranges shown next to settings. An error keeps unsupported data from being presented as a successful conversion. Correct the source and retry rather than repeatedly resubmitting an unchanged invalid input.
How should I check the download?
Enter or upload the source, choose settings, then create and review your result. Review the saved content in its destination application, including a typical case and any boundary values important to your use. A completed operation confirms processing finished; it cannot determine whether the supplied settings match your wider business requirements.
Does Text difference checker upload files to another service?
Processing runs in this browser, on your device. Files and pasted input are not uploaded to a conversion server. The website and required engine assets must load first; large operations depend on available device memory.
Can I continue after changing pages?
Selections and completed jobs stay available while you navigate inside this tab. Use My files to revisit results. Reloading or closing the tab clears the workspace; download results you want to keep first.