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Common Extension Conversions
- .htm → .html (web pages)
- .yml → .yaml (configuration files)
- .jpeg → .jpg (images)
- .tif → .tiff (images)
- .txt → .csv (when content is comma-separated)
- .png → .webp (web image optimization)
- .jpg → .webp (web image optimization)
- .tsv → .csv (spreadsheet data)
The File Extension Converter on TechConverter.me handles both simple renames and true format conversions, detects file types from content when extensions are missing or wrong, and processes files entirely in the browser for complete privacy.
Examples
Example 1: Renaming Files with Incorrect Extensions
A developer receives a batch of files from a legacy system with incorrect extensions. The converter detects the actual file type from content and suggests the correct extension:
File: report_2026.dat
Detected type: CSV (comma-separated values)
Suggested extension: .csv
Renamed to: report_2026.csv
File: config_backup.bin
Detected type: JSON
Suggested extension: .json
Renamed to: config_backup.json
File: image_001.tmp
Detected type: JPEG image (magic bytes: FF D8 FF)
Suggested extension: .jpg
Renamed to: image_001.jpg
Example 2: Web Server Extension Requirements
A web server requires .html instead of .htm. Batch renaming 50 files:
Input files:
index.htm → index.html
about.htm → about.html
contact.htm → contact.html
products.htm → products.html
... (46 more files)
Result: 50 files renamed successfully
Note: No content conversion needed — .htm and .html are identical formats
Example 3: YAML/YML Normalization
A CI/CD pipeline requires .yaml but files are saved as .yml:
docker-compose.yml → docker-compose.yaml
.github/workflows/deploy.yml → .github/workflows/deploy.yaml
kubernetes/deployment.yml → kubernetes/deployment.yaml
config/database.yml → config/database.yaml
Note: .yml and .yaml are identical — only the extension changes