File Handling Go Libraries Ranking

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- PDF processor.

- FileSystem Abstraction System for Go.

- Disk usage analyzer with console interface.

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- A package to convert an HTML template to a PDF file.

- File system event notification library with simple API, similar to os/signal.

- Copy directory recursively.

- A cross-platform real-time file synchronization tool out of the box.

- Abstract File Storage (mem, scp, zip, tar, cloud: s3, gs) for Go.

- A pluggable, extensible, and opinionated set of filesystem functionality for Go across a number of filesystem types such as os, S3, and GCS.

- Go bindings for ExifTool, the well-known library used to extract as much metadata as possible (EXIF, IPTC, ...) from files (pictures, PDF, office, ...).

- A package for reading and creating ISO9660 disk images

- Load csv file using tag.

- Read and write [parquet](https://parquet.apache.org) files.

- Compute message digest, like MD5, SHA256, SHA1, CRC or BLAKE2s, for large files.

- Package to allow one to concurrently go through a filesystem with ease.

- Load Open Packaging Conventions (OPC) files for Go.

- A simple HTTP middleware to automatically handle all your file upload needs

- A library to process http file uploads easily.

- Modern full-lifecycle PDF library for Go — parse, extract tables, generate, and sign documents with zero CGO dependencies.

- Load gtfs files in go.

- File operations library which aims to mirror feature parity with [GNU cp](https://www.gnu.org/software/coreutils/manual/html_node/cp-invocation.html).

- Simple and reliable package for file operations like copy/move/diff/list on files, directories and symbolic links.

- A tiny cross-platform Go library to hide/unhide files and directories.

- Copy files for humans.

- Treat paths as their own type instead of using strings.

- PDF/A processing for Go.