Frequently Asked Questions
Frequently Asked Questions about ListDiff Online
What is ListDiff Online?
ListDiff Online is a powerful and easy-to-use online list comparison tool. Users simply input two lists, A and B, and can quickly generate four types of results: "Only A", "Only B", "A ∩ B", and "A ∪ B". It is suitable for data cleaning, content comparison, deduplication, and various other scenarios, making list processing effortless and efficient. It also supports large-scale data, ensuring speed and accuracy, making it an essential online tool for data analysts and office workers.
How to Input Lists in ListDiff Online?
On the ListDiff Online page, users can paste or manually input lists A and B into the text boxes, one item per line. You can also drag and drop a .txt file into list A or list B to quickly read and load the file contents.
What Does the "Only A" Result Mean?
"Only A" shows all elements present in list A but not in list B. This feature is perfect for deduplication and difference analysis. For example, if you have two customer lists and want to find the unique customers in list A, ListDiff Online can quickly calculate and display the results, improving your work efficiency.
What does the "Only B" result mean?
"Only B" shows elements that exist in list B but not in list A. Users can easily identify B-exclusive data, such as newly added entries, supplemental items, or unique information from external sources, facilitating analysis, aggregation, or database updates.
What does the "AB Common" result mean?
"AB Common" shows elements that exist in both list A and B. This is useful for finding duplicates, comparing data consistency, or filtering intersection data. Whether it's sales lists, product inventories, or document records, ListDiff Online quickly identifies the common elements between the two lists.
What does the "AB Merge" result mean?
"AB Merge" combines all elements from lists A and B, automatically removing duplicates to create a complete and clean list. This feature is ideal for integrating multiple data sources, avoiding redundancy, and improving data organization efficiency. The merged list can be copied or imported into other software, making it perfect for office work, data analysis, and project management.
What size of lists does ListDiff Online support?
ListDiff Online can handle thousands of rows of list data, suitable for small, medium, and large datasets. Even with tens of thousands of customer records, product codes, or text entries, it computes quickly. The system remains efficient and stable when processing large lists, ensuring users get accurate comparison and merge results.
Do I need to register an account to use ListDiff Online?
No registration or login is required. Users can directly access listdiff.online and input lists for comparison. All processing is online, making it convenient and saving the hassle of registration and installation. Perfect for temporary data handling and everyday office use.
How is data security and privacy ensured?
All computations in ListDiff Online are performed in the browser. Data is not uploaded to any server, and users’ list contents are not stored, ensuring data security and privacy. Users can safely input sensitive information for list comparison without concern for leakage.
How to copy and save results?
Comparison results can be directly copied to the clipboard or pasted into Excel, text editors, or other office software for further processing.
Does ListDiff Online automatically remove empty lines and duplicate elements?
No, but ListDiff Online provides common list processing tools such as removing empty lines and duplicates. It can automatically clean lists, saving significant time and improving work efficiency.
Are list elements case-sensitive?
By default, ListDiff Online is case-sensitive, so “Apple” and “apple” are recognized as different elements. To ignore case, convert the list to all lowercase or uppercase before input, depending on your comparison needs.
Does it support mixed lists of numbers, text, and symbols?
Supports any character type including numbers, text, symbols, and even special characters. Whether it’s product codes, names, email addresses, or custom tags, ListDiff Online accurately recognizes and processes lists to ensure precise comparisons.
Can it handle lists exported from Excel or CSV?
You can copy the content of Excel or CSV files into the list input box and then compare. ListDiff Online automatically recognizes each line of data, enabling quick comparison and merging between different data sources.
Does it support mobile and tablet browsers?
Supports access and operations on mobile devices, with interfaces adapting to screen sizes. Whether on an office PC or a phone/tablet on the go, you can smoothly perform list comparisons and merges, enhancing work flexibility.
Will handling very large lists cause lag?
For common lists (hundreds to thousands of rows), processing is fast, but very large lists may experience slight delays. It is recommended to process extremely large lists in batches or pre-filter them before using ListDiff Online to achieve faster response times.
Which browsers are supported?
Supports major modern browsers including Chrome, Firefox, Edge, and Safari. For the best experience, it is recommended to use the latest browser version to ensure accurate page rendering and list calculations.
Can multiple lists be processed simultaneously?
Currently, ListDiff Online supports comparing two lists. If you need to process more lists, you can first merge multiple lists into two, then use the 'AB Merge' function, and gradually compare and organize as needed.
How to save comparison results long-term?
Users can directly export the results as a TXT file to local storage.
Is ListDiff Online paid?
Completely free to use, no registration, login, or payment required. Users can access listdiff.online anytime to compare and merge lists, enjoying a fast, simple, and efficient online list processing experience.