Guys please recommend any apps for mass renaming files?

hi! I’m currently dealing with a huge files that need to be renamed and doing it manually is taking forever, I need it done by Saturday I’m looking for an app or tool that can mass/batch rename files ideally something where I can rename hundreds of files at once. Preferably something simple to use and reliable since I don’t want to accidentally mess up the files. Any recommendations would be really appreciated. Thanks!

RedditMar 6ToolProductivitySource

FL score

out of 100

Verdict

BUILD

high confidence

Competition

competitors found, emerging market

Trend

8 community mentions

An AI-powered, local-first file renaming tool that is simple to use and offers robust content-based renaming for non-technical users with large file sets.

The pain

Manually renaming 'huge files' is a time-consuming, frustrating, and error-prone process. Existing batch renamers are often complex, lack content awareness, or come with restrictive subscription limits and privacy concerns (cloud-based).

The gap

There's a significant gap for a 'simple to use,' reliable, AI-powered file renamer that can analyze file content (not just metadata) and operate locally for privacy and unlimited use. Current solutions are either too complex for non-technical users or too limited/expensive in their AI offerings.

Build angle

Develop a desktop application (Windows/macOS) with an intuitive UI that leverages local AI models (or efficient API calls for advanced features) to rename files based on their content (e.g., PDF title, image description). Offer a clear one-time purchase model for unlimited local use, with optional premium cloud features if necessary.

Strengths

Extremely clear and painful problem with high urgency.
Strong demand for intelligent, automated solutions, explicitly for simplicity and reliability.
Clear evidence of willingness to pay for effective solutions (competitors charge $50-$99/month or one-time fees).

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Fly Labs Method

Is the pain real, is there a gap, is it the right time, can one person build it.

Problem clarity: 26
Solution gap: 20
Willingness to pay: 19
Buildability: 13

A strong problem with clear payment signals, but the AI-powered local-first 'simple' solution desired might have moderate build complexity for a solo builder.

Value Equation

Dream outcome and how likely it feels, against the time and effort it costs.

This idea has high potential for making money due to clear pain, strong value proposition, and an emerging market for AI solutions.

One-Person Business

Curiosity pull, identity fit, and a path from free value to paid for a solo creator.

A highly clear problem with strong monetization and niche potential, demanding a focus on simplicity for solo builder success.

Viral Frameworks

Hook strength, shareability, and how cheaply it can be tested.

A strong micro-SaaS candidate with a clear audience, valuable proposition, and proven business models, requiring refinement of the AI-powered 'simple' offering.

Builder Lens

Evidence the problem exists, timing, defensibility, and a model that fits on a napkin.

This idea addresses a clear, painful problem with a strong desire for an intelligent, simple solution, making it highly attractive.

Why this verdict

This idea scores highly across all lenses due to a clear, urgent problem, proven willingness to pay, and significant gaps in the existing market, especially for a 'simple,' reliable, local AI-powered solution. While AI integration adds complexity, leveraging existing libraries and focusing on a narrow wedge can make it highly buildable for a solo builder. The absence of funded competitors further reduces risk and increases the potential for market capture. The synthesis confirms a strong 'BUILD' recommendation, focusing on validation of the 'simple + AI + local' angle.

Five lenses, one composite. How scoring works

The angle

This weekend

Conduct in-depth user interviews with specific personas (e.g., academic researchers, photographers) to validate desired AI renaming rules and confirm pain points.
Prototype a simple UI for a core AI renaming feature (e.g., rename PDFs by title) to test user understanding and workflow.
Research local AI libraries/models for content analysis (e.g., OCR, image recognition) to assess feasibility and performance for a solo builder's MVP.

Who is already there, emerging market

Advanced RenamerVisit
A program for bulk renaming multiple files and folders at once, offering various manipulation methods including metadata extraction, GPS-based naming, and real-time preview.
Pricing: Free for personal use with limits; paid personal license and commercial licensing available (actual numbers not specified on public pages, but a free trial is offered allowing 10 files at a time).
Bulk Rename UtilityVisit
An easy-to-use file and folder renaming program for Windows with extensive customization options, including date/time stamps, EXIF, and ID3 tag support.
Pricing: Free for personal, private use at home. Commercial licenses are required for business use, priced from US$49.95 to US$92.95 per computer.
Renamer.aiVisit
An AI-powered file renaming tool that analyzes content (PDFs, images, office documents, emails) to generate descriptive, searchable names.
Pricing: Starter: $0/month (15 files/month); Pro: $9.95/month (200 files/month); Power User: $29.95/month (1,000 files/month); Ultimate: $99.95/month (5,000 files/month).
AI RenamerVisit
A hybrid solution for AI-powered file renaming with both local (unlimited renaming) and cloud (credit-based) processing options.
Pricing: Local Package: $19 (one-time purchase for unlimited renaming); Cloud Mode: 10 free credits, then credit packs (e.g., 200 credits for $10, 1,000 credits for $50).
Renamer (Mac)Visit
A batch renaming tool for macOS that simplifies renaming a large number of files according to a preset pattern.
Pricing: Free to Try (actual pricing for full version not found in search results).
Rename MasterVisit
A freeware utility designed to rename multiple files with just a few clicks, offering various renaming options.
Pricing: Free.
Name ManglerVisit
A powerful and flexible batch file renamer for macOS, offering advanced renaming operations.
Pricing: Unknown (not found in search results).
Flash RenamerVisit
A tool to rename files and archives effortlessly with various renaming capabilities.
Pricing: Trial version (full pricing not found).
HomerVisit
A learning app for kids that also includes file organization features.
Pricing: Monthly subscription at approximately $12.99; annual plan around $59.99-$79.99.
ZushVisit
A native macOS app that uses AI to automatically rename messy files, monitor folders, and add Finder tags and Spotlight metadata.
Pricing: Unknown (Product Hunt page, no pricing details).
RenamifyVisit
An AI-powered file renaming tool built by a small team, focusing on automatic organization for various file types.
Pricing: Unknown (Product Hunt page, no pricing details).

What they charge

The pricing landscape for mass file renaming apps varies significantly, ranging from completely free tools for personal use (e.g., Bulk Rename Utility, Rename Master) to subscription-based AI-powered services. Dedicated commercial licenses for traditional tools like Bulk Rename Utility can range from approximately $50 to $93 per computer. AI-driven solutions often feature tiered subscription models based on the number of files processed per month, with free tiers for limited use (e.g., Renamer.ai, AI Renamer). One-time purchase options also exist for local AI-powered tools. Overall, there's a clear divide between free, pattern-based tools and paid, AI-enhanced solutions that offer greater automation and content understanding.

What people say, 8 mentions

I raised $130M for my last startup, then walked away to build Base44 solo. In 6 months: $3.5M ARR, 300K+ users, no employees, fully bootstrapped. Then acquired by Wix for $80M. AMA. (Also giving away $3K in subscriptions.)
r/SaaS
Poured my soul into a SaaS project that went nowhere. Classic.
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Guys please recommend any apps for mass renaming files?
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