timetrialler Posted January 27, 2018 Share Posted January 27, 2018 So if I export a project as a PNG, does that PNG file contain any metadata about the author? That is, metadata. For the more technically oriented, do exported PNGs contain author data stored in the PNG in tEXt, zEXt, or iTXt chunks, to use terminology from libpng It's my desire that it doesn't, but I'm sure someone can confirm for me. I could probably check with some PNG examination tool but I'd prefer an answer from the source about Affinity Designer's PNG export behaviour. Lovin' this tool called Affinity Designer btw. Thanks Quote Link to comment Share on other sites More sharing options...
John Rostron Posted January 27, 2018 Share Posted January 27, 2018 As I understand it, PNG files do not contain any metadata. John Quote Windows 10, Affinity Photo 1.10.5 Designer 1.10.5 and Publisher 1.10.5 (mainly Photo), now ex-Adobe CC CPU: AMD A6-3670. RAM: 16 GB DDR3 @ 666MHz, Graphics: 2047MB NVIDIA GeForce GT 630 Link to comment Share on other sites More sharing options...
walt.farrell Posted January 27, 2018 Share Posted January 27, 2018 30 minutes ago, John Rostron said: As I understand it, PNG files do not contain any metadata. Well, they can contain metadata, at least according to the specification for "ancillary data chunks" provided by Wikipedia. Perhaps the PNGs exported by the Affinity applications don't contain any, though John Rostron 1 Quote -- Walt Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases PC: Desktop: Windows 11 Pro, version 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 Laptop: Windows 11 Pro, version 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU. iPad: iPad Pro M1, 12.9": iPadOS 17.4.1, Apple Pencil 2, Magic Keyboard Mac: 2023 M2 MacBook Air 15", 16GB memory, macOS Sonoma 14.4.1 Link to comment Share on other sites More sharing options...
R C-R Posted January 27, 2018 Share Posted January 27, 2018 3 hours ago, John Rostron said: As I understand it, PNG files do not contain any metadata. As @walt.farrell said, they certainly can contain metadata, & some of it can include a person's name, for example in "eXIf" chunks that store Exif metadata that can include an author, artist, or copyright holder name. John Rostron 1 Quote All 3 1.10.8, & all 3 V2.4.1 Mac apps; 2020 iMac 27"; 3.8GHz i7, Radeon Pro 5700, 32GB RAM; macOS 10.15.7 Affinity Photo 1.10.8; Affinity Designer 1.108; & all 3 V2 apps for iPad; 6th Generation iPad 32 GB; Apple Pencil; iPadOS 15.7 Link to comment Share on other sites More sharing options...
firstdefence Posted January 27, 2018 Share Posted January 27, 2018 For windows Opanda is a good exif viewer, although you can go online to one of the many metadata readers. On Mac you can just select an image and press cmd+I to see more details Quote iMac 27" 2019 Somona 14.3.1, iMac 27" Affinity Designer, Photo & Publisher V1 & V2, Adobe, Inkscape, Vectorstyler, Blender, C4D, Sketchup + more... XP-Pen Artist-22E, - iPad Pro 12.9 (Please refrain from licking the screen while using this forum) Affinity Help - Affinity Desktop Tutorials - Feedback - FAQ - most asked questions Link to comment Share on other sites More sharing options...
IanSG Posted January 28, 2018 Share Posted January 28, 2018 If you import the EXIF data, AD preserves it. I can't see anyway to populate the EXIF data within AD. Quote AP, AD & APub user, running Win10 Link to comment Share on other sites More sharing options...
John Rostron Posted January 28, 2018 Share Posted January 28, 2018 22 hours ago, walt.farrell said: Well, they can contain metadata, at least according to the specification for "ancillary data chunks" provided by Wikipedia. Perhaps the PNGs exported by the Affinity applications don't contain any, though 18 hours ago, R C-R said: As @walt.farrell said, they certainly can contain metadata, & some of it can include a person's name, for example in "eXIf" chunks that store Exif metadata that can include an author, artist, or copyright holder name. When the PNG format first became popular, (many years ago), I read somewhere that it did not support Exif data. Certainly the very old PNG files I have do not have this data. I have not updated my memory banks on PNGs since. John Quote Windows 10, Affinity Photo 1.10.5 Designer 1.10.5 and Publisher 1.10.5 (mainly Photo), now ex-Adobe CC CPU: AMD A6-3670. RAM: 16 GB DDR3 @ 666MHz, Graphics: 2047MB NVIDIA GeForce GT 630 Link to comment Share on other sites More sharing options...
R C-R Posted January 28, 2018 Share Posted January 28, 2018 1 hour ago, John Rostron said: When the PNG format first became popular, (many years ago), I read somewhere that it did not support Exif data. Certainly the very old PNG files I have do not have this data. I have not updated my memory banks on PNGs since. Even now, it is optional so not all PNGs will include it. Quote All 3 1.10.8, & all 3 V2.4.1 Mac apps; 2020 iMac 27"; 3.8GHz i7, Radeon Pro 5700, 32GB RAM; macOS 10.15.7 Affinity Photo 1.10.8; Affinity Designer 1.108; & all 3 V2 apps for iPad; 6th Generation iPad 32 GB; Apple Pencil; iPadOS 15.7 Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.