Printable Reference

AI Image Naming Convention Cheat Sheet

Consistent naming patterns for every major AI image tool.

The Universal Pattern

{project}_{tool}_{YYYYMMDD}_{seq}.png

project

Kebab-case, 2-30 chars

tool

Abbreviation (see below)

YYYYMMDD

Date, no hyphens

seq

3-digit zero-padded

Example: hero-banner_mj_20260221_001.png

Why Consistent Naming?

🔍 Instant Search

Find any image by project, tool, or date in seconds

📁 Auto-Sorting

OS file explorers group files naturally by name

🔄 Tool Agnostic

One pattern works across all AI tools you use

📦 Archive Ready

Files self-document with project, date, and origin

Tool-Specific Patterns

ComfyUI

comfy

ComfyUI_00001_.png

hero-banner_comfy_20260221_001.png

Save Image node: set filename_prefix to {project}_{tool}_{date}. Or use Numonic auto-naming.

Midjourney

user_a_cat_sitting_on_a_6abf2.png

hero-banner_mj_20260221_001.png

Rename after download. Discord: right-click, Save As. Web gallery: bulk download then batch rename.

Stable Diffusion (A1111)

00001-3928472947.png

hero-banner_sd_20260221_001.png

Settings, Saving images, Images filename pattern: [model_name]_[date]_[job_no]. Rename with batch script.

Leonardo AI

leo

leonardo_lightning_xl_1234.jpg

hero-banner_leo_20260221_001.jpg

Rename after download. Bulk download gives numbered files. Use the batch rename script from page 2.

Adobe Firefly

firefly

Firefly_20260221T091532.png

hero-banner_firefly_20260221_001.png

Rename after download. Firefly includes timestamps which helps. Strip the T-separator and add project prefix.

Pro Tip: Start with one project

Don't rename your entire library at once. Pick your current project, apply the convention, and expand from there. Consistency on new files matters more than retroactively renaming old ones.

License: All scripts and naming patterns on this page are released under the MIT License. You are free to use, copy, modify, and distribute them in personal and commercial projects without attribution.

Disclaimer: These naming conventions and scripts are provided "as is" without warranty of any kind, express or implied. They are educational examples for common AI image workflow operations. Numonic Labs Ltd and its contributors are not liable for any damages arising from their use. Always test scripts in a safe directory before running on important files.

Page 2 of 3

Batch Renaming Scripts

Copy-paste any script below to rename an entire folder of AI images in seconds. Each takes a project name and tool abbreviation as arguments.

macOS / Linux (Bash)

#!/bin/bash
# Usage: ./rename.sh <project> <tool> [dir]
PROJECT=${1:?Usage: ./rename.sh <project> <tool> [dir]}
TOOL=${2:?Provide tool abbreviation}; DIR=${3:-.}
DATE=$(date +%Y%m%d); SEQ=1
for file in "$DIR"/*.{png,jpg,jpeg,webp}; do
  [ -f "$file" ] || continue
  EXT="${file##*.}"
  NEW=$(printf "%s_%s_%s_%03d.%s" "$PROJECT" "$TOOL" "$DATE" "$SEQ" "$EXT")
  mv -- "$file" "$DIR/$NEW"
  echo "Renamed: $(basename "$file") -> $NEW"
  SEQ=$((SEQ + 1))
done

Windows (PowerShell)

# Usage: .\Rename.ps1 -Project "hero" -Tool "mj"
param(
  [Parameter(Mandatory)]$Project,
  [Parameter(Mandatory)]$Tool,
  [string]$Dir = "."
)
$date = Get-Date -Format "yyyyMMdd"; $seq = 1
Get-ChildItem "$Dir\*" -Include *.png,*.jpg,*.webp | ForEach-Object {
  $ext = $_.Extension
  $new = "{0}_{1}_{2}_{3:d3}{4}" -f $Project, $Tool, $date, $seq, $ext
  Rename-Item $_.FullName -NewName $new
  Write-Host "Renamed: $($_.Name) -> $new"; $seq++
}

Cross-Platform (Python 3)

#!/usr/bin/env python3
"""Usage: python rename.py <project> <tool> [dir]"""
import sys
from pathlib import Path
from datetime import date
project, tool = sys.argv[1], sys.argv[2]
directory = Path(sys.argv[3]) if len(sys.argv) > 3 else Path(".")
today = date.today().strftime("%Y%m%d")
exts = {".png", ".jpg", ".jpeg", ".webp"}
files = sorted(f for f in directory.iterdir() if f.suffix.lower() in exts)
for seq, file in enumerate(files, start=1):
    new_name = f"{project}_{tool}_{today}_{seq:03d}{file.suffix}"
    file.rename(directory / new_name)
    print(f"Renamed: {file.name} -> {new_name}")

Page 3 of 3

Quick Reference Card

Tear this page out and keep it next to your workstation. Everything you need to name files consistently, at a glance.

Tool Abbreviations

Tool	Code
Midjourney	mj
ComfyUI	comfy
Stable Diffusion	sd
Leonardo AI	leo
Adobe Firefly	firefly
Flux (via ComfyUI)	flux
Other / Custom	custom

Naming Rules

All lowercase, always

Underscores between sections (not hyphens)

Hyphens within project names (kebab-case)

No spaces or special characters

Date always YYYYMMDD (no separators)

Sequence always 3-digit zero-padded

Common Mistakes

Hero Banner_MJ_2026-02-21.png

hero-banner_mj_20260221_001.png

Spaces, uppercase, date hyphens, no sequence

img_001.png

logo-redesign_dalle_20260221_001.png

No project, no tool, no date

midjourney-hero-banner-2026.png

hero-banner_mj_20260221_001.png

Tool in wrong position, no underscore separators

hero-banner_mj_20260221_1.png

hero-banner_mj_20260221_001.png

Sequence not zero-padded — breaks sort order at 10+

hero_banner_mj_20260221_001.PNG

hero-banner_mj_20260221_001.png

Uppercase extension, underscore in project name

Skip manual naming entirely

Numonic names, tags, and organizes your AI images automatically. Drop files in your sync folder—naming convention applied instantly.

numonic.ai → Try free

Recommended Folder Structure

ai-images/
├── hero-banner/
│   ├── hero-banner_mj_20260221_001.png
│   └── hero-banner_comfy_20260222_001.png
├── product-shots/
│   └── product-shots_dalle_20260221_001.png
├── social-media/
│   └── social-media_leo_20260221_001.jpg
└── _archive/
    └── (rejected / old versions)

Quick Workflow Checklist

Create project folder (one per campaign/brief)

Generate images in your AI tool of choice

Download to project folder (or sync folder)

Run batch rename script with project + tool args

Review renamed files, move rejects to _archive/

Back up folder to cloud / Numonic library

numonic.ai

AI-Native Asset Management

Free to share. Attribution appreciated.

Batch Renaming Scripts

Copy-paste any script below to rename an entire folder of AI images in seconds. Each takes a project name and tool abbreviation as arguments.

macOS / Linux (Bash)

#!/bin/bash
# Usage: ./rename.sh <project> <tool> [dir]
PROJECT=${1:?Usage: ./rename.sh <project> <tool> [dir]}
TOOL=${2:?Provide tool abbreviation}; DIR=${3:-.}
DATE=$(date +%Y%m%d); SEQ=1
for file in "$DIR"/*.{png,jpg,jpeg,webp}; do
  [ -f "$file" ] || continue
  EXT="${file##*.}"
  NEW=$(printf "%s_%s_%s_%03d.%s" "$PROJECT" "$TOOL" "$DATE" "$SEQ" "$EXT")
  mv -- "$file" "$DIR/$NEW"
  echo "Renamed: $(basename "$file") -> $NEW"
  SEQ=$((SEQ + 1))
done

Windows (PowerShell)

# Usage: .\Rename.ps1 -Project "hero" -Tool "mj"
param(
  [Parameter(Mandatory)]$Project,
  [Parameter(Mandatory)]$Tool,
  [string]$Dir = "."
)
$date = Get-Date -Format "yyyyMMdd"; $seq = 1
Get-ChildItem "$Dir\*" -Include *.png,*.jpg,*.webp | ForEach-Object {
  $ext = $_.Extension
  $new = "{0}_{1}_{2}_{3:d3}{4}" -f $Project, $Tool, $date, $seq, $ext
  Rename-Item $_.FullName -NewName $new
  Write-Host "Renamed: $($_.Name) -> $new"; $seq++
}

Cross-Platform (Python 3)

#!/usr/bin/env python3
"""Usage: python rename.py <project> <tool> [dir]"""
import sys
from pathlib import Path
from datetime import date
project, tool = sys.argv[1], sys.argv[2]
directory = Path(sys.argv[3]) if len(sys.argv) > 3 else Path(".")
today = date.today().strftime("%Y%m%d")
exts = {".png", ".jpg", ".jpeg", ".webp"}
files = sorted(f for f in directory.iterdir() if f.suffix.lower() in exts)
for seq, file in enumerate(files, start=1):
    new_name = f"{project}_{tool}_{today}_{seq:03d}{file.suffix}"
    file.rename(directory / new_name)
    print(f"Renamed: {file.name} -> {new_name}")

Quick Reference Card

Tear this page out and keep it next to your workstation. Everything you need to name files consistently, at a glance.

Tool Abbreviations

Tool	Code
Midjourney	mj
ComfyUI	comfy
Stable Diffusion	sd
Leonardo AI	leo
Adobe Firefly	firefly
Flux (via ComfyUI)	flux
Other / Custom	custom

Naming Rules

All lowercase, always

Underscores between sections (not hyphens)

Hyphens within project names (kebab-case)

No spaces or special characters

Date always YYYYMMDD (no separators)

Sequence always 3-digit zero-padded

Common Mistakes

Hero Banner_MJ_2026-02-21.png

hero-banner_mj_20260221_001.png

Spaces, uppercase, date hyphens, no sequence

img_001.png

logo-redesign_dalle_20260221_001.png

No project, no tool, no date

midjourney-hero-banner-2026.png

hero-banner_mj_20260221_001.png

Tool in wrong position, no underscore separators

hero-banner_mj_20260221_1.png

hero-banner_mj_20260221_001.png

Sequence not zero-padded — breaks sort order at 10+

hero_banner_mj_20260221_001.PNG

hero-banner_mj_20260221_001.png

Uppercase extension, underscore in project name

Skip manual naming entirely

Numonic names, tags, and organizes your AI images automatically. Drop files in your sync folder—naming convention applied instantly.

numonic.ai → Try free

Recommended Folder Structure

ai-images/
├── hero-banner/
│   ├── hero-banner_mj_20260221_001.png
│   └── hero-banner_comfy_20260222_001.png
├── product-shots/
│   └── product-shots_dalle_20260221_001.png
├── social-media/
│   └── social-media_leo_20260221_001.jpg
└── _archive/
    └── (rejected / old versions)

Quick Workflow Checklist

Create project folder (one per campaign/brief)

Generate images in your AI tool of choice

Download to project folder (or sync folder)

Run batch rename script with project + tool args

Review renamed files, move rejects to _archive/

Back up folder to cloud / Numonic library

numonic.ai

AI-Native Asset Management

Free to share. Attribution appreciated.