What problem this product solves MailMergeOnline helps teams avoid the repetitive work of creating personalized documents one at a time. Combine a PDF template with an Excel or CSV spreadsheet and generate one finished PDF for every row. It is designed for batch documents such as offer letters, contracts, payslips, certificates, invoices, KYC forms and payment reminders. Key features and benefits The tool runs entirely in your browser, with no account, installation or upload step. PDF and spreadsheet files remain on the device where the merge is performed, which helps protect salary data, ID numbers and client records. It can detect existing PDF form fields automatically, match spreadsheet headers to template fields, and provide a pre-filled spreadsheet with the exact column names required. Users can drag fields onto a page, edit and restyle text, adjust positioning, and preview any spreadsheet row before generating files. The result is one PDF per row, with filenames created from spreadsheet data, such as amelia-hart-offer.pdf. Outputs can be downloaded as a single zip or as one combined PDF. Generated PDFs can remain fillable, or be flattened into non-editable documents. The tool can work offline after the page has loaded, and original files are not modified. Notable alternatives and how this product compares Traditional Word mail merge is useful for letters, but MailMergeOnline is focused on producing separate PDF files from a template and spreadsheet. Manual PDF editing requires repeating the same changes for every recipient, while this product automates the process in one batch. Server-based document tools may require uploading sensitive files, whereas MailMergeOnline performs the merge locally in the browser and does not retain documents after the tab is closed. Pricing models or plans The homepage states that merging can begin immediately with no sign-up and that it does not cost anything. No paid plans, usage tiers or subscription pricing are shown. The practical batch limit depends on the user’s computer rather than a plan tier, and hundreds of rows can be processed in a few seconds. FAQs Q: What files can I use? A: You can use a PDF template with an XLSX or CSV spreadsheet. Existing AcroForm fields are detected automatically. Q: Is my data uploaded? A: No. The PDF, spreadsheet and generated files are processed in your browser, with no server storing the documents. Q: How many PDFs can I generate? A: You can create one PDF per spreadsheet row, including batches of hundreds of rows. The practical limit depends on your machine. Q: Can I customize the output filenames? A: Yes. Filename templates can use spreadsheet values and the row number, with names cleaned for compatibility across operating systems. Q: Are generated PDFs fillable? A: Yes, by default. You can also turn this option off to create flat, non-editable PDFs.
MailMergeOnline PDF mail merge from Excel
Create personalized PDFs from Excel or CSV data in your browser. Merge one template into hundreds of private, downloadable files with no uploads.
