Choose the right rename rule before changing a large batch of files. Each tool shows practical examples, clear steps, and the matching Renamio workflow.
Choose by rename task
Start from the job you need to finish: replace repeated text, add numbers, use regex, clean unwanted characters, convert case or pinyin, add random IDs, fix padding, or repair extensions. Renamio keeps each workflow focused so you can preview the result before applying changes.
Text replacement
Batch replace spaces, camera prefixes, duplicate markers, and repeated text in file names with live preview and undo protection.
Replace spaces
my document.pdf
my_document.pdf
Rename camera prefixes
IMG_001.jpg
Photo_001.jpg
Remove duplicate markers
report (1).docx
report.docx
Advanced matching
Use regex capture groups to restructure file names, clean dates, extract numbers, and rename complex batches safely.
Extract dates
IMG_2024-01-15_photo.jpg
2024-01-15-photo.jpg
Reorder tokens
file001-backup.txt
backup-001.txt
Normalize patterns
Document(1).pdf
Document-1.pdf
Numbering
Batch add padded sequence numbers, custom prefixes, and ordered numbering to photos, documents, exports, and project files.
Padded prefix
photo.jpg
001_photo.jpg
Suffix numbering
slide.png
slide_12.png
Custom format
asset.webp
project-0007.webp
Prefix and suffix
Add prefixes, suffixes, version labels, dates, and project markers to many file names at once.
Add prefix
document.pdf
backup_document.pdf
Add suffix
report.docx
report_v2.docx
Add status
image.jpg
image_approved.jpg
Cleanup
Clean prefixes, suffixes, duplicate markers, position-based text, and unwanted characters from many file names.
Remove prefix
IMG_001.jpg
001.jpg
Remove spaces
my document.pdf
mydocument.pdf
Remove repeated labels
report_final_final.docx
report.docx
Dates and time
Add dates, timestamps, and normalized date formats to documents, photos, backups, reports, and export files.
Add date prefix
document.pdf
2026-05-17_document.pdf
Add date suffix
backup.zip
backup_2026-05-17.zip
Normalize date format
2026.05.17-report.csv
2026-05-17-report.csv
Conditional replace
Replace text before or after a target character, fixed character count, or matched anchor point across many file names.
Replace prefix before marker
photo_20240517.jpg
image_20240517.jpg
Replace middle label
report-final-v3.docx
report-approved-v3.docx
Change anchored segment
clientA_invoice_001.pdf
clientB_invoice_001.pdf
Swap text
Swap the left and right side of a delimiter to reorder names, titles, IDs, dates, and labels in bulk.
Swap name and title
John-Resume.pdf
Resume-John.pdf
Move date label
2026-Report.xlsx
Report-2026.xlsx
Reorder IDs
SKU123_product.png
product_SKU123.png
Name cleanup
Remove invalid characters, bracketed text, repeated spaces, and repeated separators from downloaded or exported file names.
Remove invalid symbols
file:name?.txt
filename.txt
Collapse spaces
report final.pdf
report final.pdf
Remove bracket notes
photo (copy).jpg
photo.jpg
Character conversion
Batch convert file name case, Chinese to pinyin, Simplified and Traditional Chinese, and number formats.
Lowercase names
My Document.PDF
my document.pdf
Chinese to pinyin
重要文档.pdf
zhong yao wen dang.pdf
Traditional to Simplified
檔案資料.txt
档案资料.txt
Random strings
Generate random letters, numbers, or custom character sets to create unique file names and avoid collisions.
Random suffix
document.pdf
document_A7B9.pdf
Random prefix
image.png
R4K2_image.png
Numeric ID
export.csv
export_839201.csv
Zero padding
Pad numbers with leading zeros or remove extra zeros so files sort correctly in folders and archives.
Pad chapter numbers
Chapter1.txt
Chapter001.txt
Pad image numbers
img_9.jpg
img_009.jpg
Remove padding
file_0007.log
file_7.log
Extension repair
Detect real file types and fix misnamed extensions such as zip111, rar001, and damaged archive suffixes.
Fix ZIP suffix
important.zip111
important.zip
Fix RAR suffix
backup.rar001
backup.rar
Restore archive type
archive.7z.tmp
archive.7z
Custom logic
Write custom JavaScript rename logic for file content, file size, file index, and complex conditional workflows.
Use file content
note.txt
Project_Plan_note.txt
Add size label
photo.jpg
[MEDIUM]_5MB_photo.jpg
Custom extension logic
document.txt
document.zip
Download Renamio for Windows and macOS to apply these rules locally with preview and undo history.