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Stefan Petri

Stefan Petri – Trainer for Photoshop, InDesign & Illustrator

Areas of expertise
  • 35 courses
  • 10 more packages
  • 498 video lessons
  • 82 hours of video
  • 468 text tutorials

Together with his brother Matthias, Stefan Petri runs the popular specialist forum PSD-Tutorials.de and the e-learning platform TutKit.com, which focuses on the training and further education of digital professional skills.

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Courses and packages by Stefan Petri

Claude Cowork: Your AI assistant that really takes work off your hands
Go to content  To Claude Cowork Tutorial: Websites & Automations via AI
Claude Cowork Tutorial: Websites & Automations via AI

Have websites, automations, and image editing done by AI – completely without code

59 minutes
Next Level Content: Images and videos with AI power from ChatGPT & Sora
Go to content  To Create AI Images & Videos: ChatGPT & Sora Course
Create AI Images & Videos: ChatGPT & Sora Course

The Sora & ChatGPT Master Course: Your Guide to AI Content Creation

1 hour 16 minutes
Gemini Crash Course: Become an AI Genius with Just a Few Clicks
Go to content  To Gemini: Your smart AI butler for more time!
Gemini: Your smart AI butler for more time!

Not just for nerds: Your relaxed introduction to the world of Gemini!

1 hour 16 minutes
Perplexity.ai explains: How to research faster and better
Go to content  To Perplexity: The AI answer machine for fast & precise research
Perplexity: The AI answer machine for fast & precise research

Answers instead of searching. That's how research works today.

48 minutes
Claude AI unleashed: Your practical training for creative and professional breakthroughs
Go to content  To Claude AI: More than just chatting – The Professional Course
Claude AI: More than just chatting – The Professional Course

How you can revolutionize your daily work with practical projects and clever prompt strategies to achieve impressive results.

1 hour 12 minutes
NotebookLM: Research tool with podcast feature
Go to content  To NotebookLM Tutorial: Basics, Audio & Pro Hacks
NotebookLM Tutorial: Basics, Audio & Pro Hacks

From texts, insights are gained

36 minutes
Photoshop workshop DVD - Effects for typo, layout & photo - Vol. 2 (free)
free of charge
Go to content  To Typo, layout and effects in Photoshop
Typo, layout and effects in Photoshop

More style, more power, more templates!

17 hours 9 minutes
Photoshop Workshop DVD - Effects for typography, layout & photo - Vol. 1 (free)
free of charge
Go to content  To Photoshop Workshop: Photo Editing, Effects
Photoshop Workshop: Photo Editing, Effects

Full power, more inspirations, maximum WOW effect!

23 hours 19 minutes
Excel: Tips & Tricks - 40 ingenious best-of-hacks for effective work
Go to content  To Excel: Tips & tricks | 40 best-of hacks for effective working
Excel: Tips & tricks | 40 best-of hacks for effective working

Faster results in your tables

1 hour 15 minutes
Clipping with Photoshop Elements (Tutorial)
Go to content  To Clipping with Photoshop Elements (Tutorial)
Clipping with Photoshop Elements (Tutorial)

Neatly cut out!

1 hour 46 minutes
AI in Photoshop: Next-level image editing with artificial intelligence
Go to content  To AI in Photoshop: Image editing with artificial intelligence
AI in Photoshop: Image editing with artificial intelligence

Adjust your knowledge to AI!

2 hours 42 minutes
Adobe Firefly (Tutorial): create spectacular images with generative AI
Go to content  To Adobe Firefly (Tutorial): Creating images with generative AI
Adobe Firefly (Tutorial): Creating images with generative AI

Understand & apply effectively

3 hours 43 minutes
Sharpening images with & without AI - against pixelated, blurred photos
Go to content  To Sharpen images with AI to combat pixelated, blurred photos
Sharpen images with AI to combat pixelated, blurred photos

Little effort. Sharp results.

1 hour 22 minutes
Crop with Photoshop and AI - cut out motifs quickly and precisely
Go to content  To Crop with Photoshop & AI: Cut out motifs with hairline precision
Crop with Photoshop & AI: Cut out motifs with hairline precision

Free yourself from tedious manual labor!

1 hour 23 minutes
Remove people & distracting objects from images - Photoshop, DALL-E and other AI tools
Go to content  To Removing people & objects from images with Photoshop & Co
Removing people & objects from images with Photoshop & Co

Just a few clicks. Convincing results.

1 hour 1 minute
Enlarge images and photos without loss of quality with Photoshop and AI
Go to content  To Enlarge images & photos without loss of quality: Photoshop & AI
Enlarge images & photos without loss of quality: Photoshop & AI

Saving images and making them printable

1 hour 49 minutes
Removing image noise: Photoshop, Lightroom and impressive alternatives (tutorial)
Go to content  To Removing image noise: Photoshop, Lightroom, AI tools
Removing image noise: Photoshop, Lightroom, AI tools

For intoxicatingly denoised photos

1 hour 13 minutes
Improve audio recordings: Sound editing for reverb, hiss and other background noise
Go to content  To Improve audio recordings: Sound editing, reverb, noise
Improve audio recordings: Sound editing, reverb, noise

Listen to yourself carefully!

2 hours 8 minutes
ChatGPT: What AI can do. How it helps you with texts, codes, SEO and Excel
Go to content  To ChatGPT training: what AI can do - texts, codes, SEO ...
ChatGPT training: what AI can do - texts, codes, SEO ...

A tool for more effective work

2 hours 57 minutes
Affinity Photo training: over 30 best-of hacks for photo editing
Go to content  To Affinity Photo training: 30 best-of hacks for photo editing
Affinity Photo training: 30 best-of hacks for photo editing

A few clicks. Great pictures.

2 hours 2 minutes

Latest text tutorials by Stefan Petri

Blog posts

DMEXCO: AI agents are set to plan and book advertising campaigns
Go to content  To DMEXCO: AI agents set to plan and book advertising campaigns
DMEXCO: AI agents to plan and book advertising campaigns

AI agents for advertising, MCP integrations, and standards such as AdCP and AAMP were presented at DMEXCO.

Aiarty Image Enhancer: Enhance images and try it free for 7 days
Go to content  To Aiarty Image Enhancer: Enhance images and try it free for 7 days
Aiarty Image Enhancer: Enhance images and try it free for 7 days

Denoise photos, restore old pictures, and upscale images: Try Aiarty Image Enhancer free for seven days. Free code valid until 31 October 2026.

Why the Harry Potter trailer feels colder and darker
Go to content  To Why the Harry Potter trailer appears colder and darker
Why the Harry Potter trailer feels colder and darker

The trailer for the new Harry Potter series appears colder than the films from 2001. Reasons include color trends, camera technology, and visual intent, according to sources.

DOCMA: Design decisions shape extraordinary AI images
Go to content  To DOCMA: Design decisions shape extraordinary AI images
DOCMA: Design decisions shape extraordinary AI images

DOCMA distinguishes between appealing and exceptional AI images and emphasizes the role of design decisions alongside the prompt.

Google brings real-time avatars for businesses in Gemini Live
Go to content  To Google brings real-time avatars for businesses in Gemini Live
Google is bringing real-time avatars for businesses in Gemini Live

Live Avatar complements Gemini 3.8 Live with synchronized speech and facial expressions. The feature is available through Gemini Enterprise for businesses.

PixLate: Translate documents and maintain layout?
Go to content  To PixLate: Translate documents and retain layout?
PixLate: Translate documents while preserving layout?

A Product Hunt entry introduces PixLate for translating documents. The teaser mentions the preservation of artwork and layout; details are lacking.

Google rank 1, but no ChatGPT recommendation
Go to content  To Google rank 1, but no ChatGPT recommendation
Google rank 1, but no ChatGPT recommendation

OnlineMarketing.de discusses ChatGPT recommendations despite being ranked number 1 on Google, citing access, clarity, and evidence as evaluation criteria.

GTA 6 Extended Look: Netflix shows extensive insights ahead of the release
Go to content  To GTA 6 Extended Look: Netflix shows extensive insights before the release
GTA 6 Extended Look: Netflix shows extensive insights before the release

Rockstar Games has announced another important step in the PR strategy for Grand Theft Auto VI, thus raising expectations in the gaming community…

Premiere Mobile is available for free for Android
Go to content  To Premiere Mobile is available for free for Android
Premiere Mobile is available for free on Android

Premiere Mobile is available for free on Android. Find out which editing features are included, what the device requirements are, and more...

MacOS Screen Sharing: New Vulnerability Causes a Stir
Go to content  To MacOS Screen Sharing: New Vulnerability Causes a Stir
MacOS Screen Sharing: New vulnerability causing a stir

A newly discovered security vulnerability in macOS screen sharing apparently allows attackers to remotely control the Windows and keyboard of an affected...

Amazon Prime Day: Photoshop and Lightroom on sale
Go to content  To Amazon Prime Day: Photoshop and Lightroom on sale
Amazon Prime Day: Photoshop and Lightroom on sale

Amazon Prime Day runs until tomorrow. Here you can find the Photoshop and Lightroom offers as well as other deals and tips before making a purchase.

HyperFrames Studio is presented as a video editing program for agents
Go to content  To HyperFrames Studio is presented as a video editing program for agents
HyperFrames Studio is introduced as a video editing program for agents

A brief Product Hunt entry describes HyperFrames Studio as a desktop video editing program for agents. Features and availability remain unspecified.

OpenAI Astra announces release and sparks discussion
Go to content  To OpenAI Astra announces release and sparks discussion
OpenAI Astra announces release and sparks discussion

OpenAI has released details about the upcoming AI model Astra and indicated that the release is imminent.

Claude Opus 5.5 leads the arena rankings for creative writing
Go to content  To Claude Opus 5.5 tops the arena ranking for creative writing
Claude Opus 5.5 tops the arena ranking for creative writing

Claude Opus 5.5 leads the Text Arena in creative writing overall. 487 ratings and a wide ranking range limit the significance of the statement.

YouTube enables product tags in creator videos
Go to content  To YouTube enables product tags in creator videos
YouTube enables product tags in creator videos

In a move aimed at further enhancing the connection between video content and shop offerings, YouTube has announced that creators in the future...

AI detects errors in the assembly of IKEA furniture
Go to content  To AI detects mistakes in the assembly of IKEA furniture
AI detects errors in the assembly of IKEA furniture

In the Furniture Assembly Benchmark by Epoch AI, GPT-6 Astra identifies 80 percent of the errors in IKEA furniture.

Windows 11 26H2 brings new optimizations and developer tools
Go to content  To Windows 11 26H2 brings new optimizations and developer tools
Windows 11 26H2 brings new optimizations and developer tools

In August 2026, Microsoft introduced a comprehensive update package that primarily focuses on optimizations for Windows 11 and Office.

Anthropic expands text watermarking to additional Claude models
Go to content  To Anthropic expands text watermarking to additional Claude models
Anthropic expands text watermarking to additional Claude models

Anthropic expands the text watermarking to additional Claude models. What the labeling indicates and why it is not a definitive proof of origin.

Apple showcases new creative development tools in the macOS ecosystem
Go to content  To Apple showcases new creative development tools in the macOS ecosystem
Apple unveils new creative development tools in the macOS ecosystem

Apple introduced a series of new creative development tools in June 2026, further advancing the macOS ecosystem towards integrated creative workflows...

Midjourney is testing style previews and improving edits as well as tiles
Go to content  To Midjourney is testing style previews and improving editing as well as tiles
Midjourney is testing style previews and improving edit and tiles

Midjourney is testing style previews on alpha.midjourney.com and reports more precise edits as well as improved tile transitions for V8.1 and V8.2.