OpenScan
Productivity
document scanner
SHOW HN2021
200points
39comments
#231of 2,533 in 2021
Top 10%of 2021 by points
How HN took it
MixedNo clear lean
3 positive, 9 neutral or asking, 3 mixed, 4 critical, out of 19 comments about the project. Thread score -0.03.
Execution: 0 for, 2 againstIdea: 1 for, 1 againstDesign: 1 for, 1 against
The thread, comment by comment
Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.
positive neutral or mixed critical about another commenter or something else the maker
What HN said
What people liked
Clean, polished UI compared with OpenNoteScanner
From 2 comments
My first instinct is to compare this to OpenNoteScanner, the only other quasi-functioning FOSS note scanning app. The UI here is significantly more polished and better. The only…
pinusc on HNI've used OpenNoteScan before: * https://f-droid.org/en/packages/com.todobom.opennotescanner/ * https://github.com/allgood/OpenNoteScanner It works OK but it looks a bit old, and…
sdwolfz on HN
Good enough for most CamScanner use cases
From 1 comment
Quick take: this is staying on my phone, great effort :) Notes: - Doesn't keep flash permanently on (like CamScanner) - Skew correction looks maybe worse quality (than…
jabberwcky on HN
Open-source and usable on phone without extra setup
From 2 comments
I've used OpenNoteScan before: * https://f-droid.org/en/packages/com.todobom.opennotescanner/ * https://github.com/allgood/OpenNoteScanner It works OK but it looks a bit old, and…
sdwolfz on HNQuick take: this is staying on my phone, great effort :) Notes: - Doesn't keep flash permanently on (like CamScanner) - Skew correction looks maybe worse quality (than…
jabberwcky on HN
Objections
No automatic cropping or perspective correction
From 4 comments
It is nice start, but cropping function is pretty much not working. When scanning with the phone the page is rarely properly alighned ans cropping step should be automatic (like…
vzaliva on HNMy first instinct is to compare this to OpenNoteScanner, the only other quasi-functioning FOSS note scanning app. The UI here is significantly more polished and better. The only…
pinusc on HNUser Experience: This app does not open scan dialog immediately, annoying. Features: This app does not fix perspective distortion. Office Lens…
adontz on HNLooks like a really great start! Just gave the app a quick test and the basics seem to be working fine. Apart from automatic cropping and perspective distortion correction others…
quuuux on HN
Exported PDFs have overly large white margins
From 1 comment
Looks like a really great start! Just gave the app a quick test and the basics seem to be working fine. Apart from automatic cropping and perspective distortion correction others…
quuuux on HN
Default filters give poor black/white results
From 1 comment
My first instinct is to compare this to OpenNoteScanner, the only other quasi-functioning FOSS note scanning app. The UI here is significantly more polished and better. The only…
pinusc on HN
Image quality weaker than CamScanner or Office Lens
From 3 comments
I like that you are using Flutter. Will give a look at the code. The image quality is not good, but probably due to my camera. CS CamScanner gives me better results but I don't…
pricci on HNQuick take: this is staying on my phone, great effort :) Notes: - Doesn't keep flash permanently on (like CamScanner) - Skew correction looks maybe worse quality (than…
jabberwcky on HNUser Experience: This app does not open scan dialog immediately, annoying. Features: This app does not fix perspective distortion. Office Lens…
adontz on HN
Requests
Automatic edge detection and cropping
From 3 comments
It is nice start, but cropping function is pretty much not working. When scanning with the phone the page is rarely properly alighned ans cropping step should be automatic (like…
vzaliva on HNMy first instinct is to compare this to OpenNoteScanner, the only other quasi-functioning FOSS note scanning app. The UI here is significantly more polished and better. The only…
pinusc on HNLooks like a really great start! Just gave the app a quick test and the basics seem to be working fine. Apart from automatic cropping and perspective distortion correction others…
quuuux on HN
Perspective distortion correction
From 2 comments
User Experience: This app does not open scan dialog immediately, annoying. Features: This app does not fix perspective distortion. Office Lens…
adontz on HNMy first instinct is to compare this to OpenNoteScanner, the only other quasi-functioning FOSS note scanning app. The UI here is significantly more polished and better. The only…
pinusc on HN
OCR support
From 2 comments
I don't see anything on the readme about OCR. In the PDF conversion, does OpenScan do any OCR? I guess I expect this from a document scanning app these days, but I don't really…
mawise on HNI would recommend https://github.com/PaddlePaddle/PaddleOCR over the default tesseract. It seems to do a better job these days and uses more modern approaches.
bane on HN
Start in camera mode and open scan dialog immediately
From 2 comments
User Experience: This app does not open scan dialog immediately, annoying. Features: This app does not fix perspective distortion. Office Lens…
adontz on HNMy first instinct is to compare this to OpenNoteScanner, the only other quasi-functioning FOSS note scanning app. The UI here is significantly more polished and better. The only…
pinusc on HN
Storage via protocol with tags
From 1 comment
is it able to store the document somewhere via a protocol? that would be really helpful, perhaps with tags?
deknos on HN
Questions
Does it do OCR on PDF conversion?
From 1 comment
I don't see anything on the readme about OCR. In the PDF conversion, does OpenScan do any OCR? I guess I expect this from a document scanning app these days, but I don't really…
mawise on HN
Can it remove printer steganographic tracking dots?
From 1 comment
Question: can it remove printer steganographic tracking dots? https://en.wikipedia.org/wiki/Printer_steganography
nimbius on HN
What state management is used besides setState?
From 1 comment
What are you using for state management besides setState() ?
gman83 on HN
Alternatives named
Office Lens
From 2 comments
User Experience: This app does not open scan dialog immediately, annoying. Features: This app does not fix perspective distortion. Office Lens…
adontz on HNTried both, Adobe Scan and Office Lens, and liked MS one more, because its default “auto” filter produced more legible documents (better contrast and brigthness) than the Adobe’s…
qilo on HN
OpenNoteScanner
From 2 comments
My first instinct is to compare this to OpenNoteScanner, the only other quasi-functioning FOSS note scanning app. The UI here is significantly more polished and better. The only…
pinusc on HNI've used OpenNoteScan before: * https://f-droid.org/en/packages/com.todobom.opennotescanner/ * https://github.com/allgood/OpenNoteScanner It works OK but it looks a bit old, and…
sdwolfz on HN
CamScanner
From 2 comments
I like that you are using Flutter. Will give a look at the code. The image quality is not good, but probably due to my camera. CS CamScanner gives me better results but I don't…
pricci on HNQuick take: this is staying on my phone, great effort :) Notes: - Doesn't keep flash permanently on (like CamScanner) - Skew correction looks maybe worse quality (than…
jabberwcky on HN
Adobe Scan
From 1 comment
I've been using the Adobe equivalent, and it seems to work pretty well. It's not quite as good as a flatbed scanner, but it does a good-enough job with nothing more than my…
jfengel on HN
NAPS2
From 1 comment
NAPS2 (https://www.naps2.com/) is also a similar open-source app with OCR built in.
ssheth on HN