Best way to upload a number of large parts manuals? (1 Viewer)

[daveT]

What is the best way to upload and post many large U.S. military aircraft parts manuals to this board? One at a time, Or can I send many to somewhere for indexing and posting? Examples include: P-26, P-38,P-40, P-47D, P-51H, P-61, P-82, SBD, F-80, F-86, F9F, and many more that I recently acquires. All are large PDF files.

 

[ThomasP]

I have no idea what the best way is, but - if not too much of a problem - please do persevere & upload them.

 

[fubar57]

Hey Dave. American aircraft manuals can go here.....https://ww2aircraft.net/forum/threads/manual-index-american.36322/

 

[tomo pauk]

What is the best way to upload and post many large U.S. military aircraft parts manuals to this board? One at a time, Or can I send many to somewhere for indexing and posting? Examples include: P-26, P-38,P-40, P-47D, P-51H, P-61, P-82, SBD, F-80, F-86, F9F, and many more that I recently acquires. All are large PDF files.

Dave - how actually big are these?
If this web size says 'too big', there is a number of free hosting sites that can host them. Aternatively, the pdf files can be broken in several pieces and posted here sequentally.

 

[Crimea_River]

MiTasol has some experience with this.

 

[Marcel]

In the past I also helped people to resize the files. Usually, PDFs are bigger than they need to be.

 

[fubar57]

I use this site all the time to shrink PDFs...... Compress PDF online. Same PDF quality less file size

 

[bf109xxl]

Please, never compress pdfs!
Anyone who advises the opposite has apparently never encountered the problem of being unable to make out important details in a photo due to pixelation caused by low resolution. Nor have they ever worked with optical character recognition. If the file size is too large for someone, they can reduce it themselves - there are plenty of tools available for that. A resolution of 600 dpi is not excessive. Uploading a few hundred megabytes or even a few gigabytes to a file-sharing server isn't a big problem these days.

 

[fubar57]

I always compare original to compressed and there has never been a noticeable difference. This photo in the PDF is showing 56.5% and I enlarged it to 166%

 

[MiTasol]

What is the best way to upload and post many large U.S. military aircraft parts manuals to this board? One at a time, Or can I send many to somewhere for indexing and posting? Examples include: P-26, P-38,P-40, P-47D, P-51H, P-61, P-82, SBD, F-80, F-86, F9F, and many more that I recently acquires. All are large PDF files.

Hi Dave

I follow this procedure.

Search for a thread on the particular aircraft/engine/part type. If no such thread exists start one. If there are a number of threads I often start a new one with links to all the others. Sometimes I reactivate an old thread if its title and content is suitable. EDIT for example I do not add E&M or Parts to a thread called Pilots x.

Then I post one at a time by topic - as in put all the P-n documents in one thread and also post a link to them in Manual Index - American

I always compress (optimise scanned pages) the files with Adobe Acrobat as it Adobe not degrade the content. fubar57 provides a link to another way to compress the files. I would recommend you find a very detailed page and compress that as a trial to determine if there is any loss of quality and then decide whether that degradation is acceptable before posting.

 

[Marcel]

Please, never compress pdfs!
Anyone who advises the opposite has apparently never encountered the problem of being unable to make out important details in a photo due to pixelation caused by low resolution. Nor have they ever worked with optical character recognition. If the file size is too large for someone, they can reduce it themselves - there are plenty of tools available for that. A resolution of 600 dpi is not excessive. Uploading a few hundred megabytes or even a few gigabytes to a file-sharing server isn't a big problem these days.

But it is for a lamp installation like this.

I disagree. Many pdfs are way too big and can be shrunk without losing details.

 

[MiTasol]

But it is for a lamp installation like this.

I disagree. Many pdfs are way too big and can be shrunk without losing details.

Yes. We must all acknowledge that this site costs a bundle to run and therefore use links where this is possible and keep file sizes as small as practical to keep the costs managable.

 

[bf109xxl]

I always compress (optimise scanned pages) the files with Adobe Acrobat as it Adobe not degrade the content.

The result depends not on the software developer, but on the compression algorithm used - I swear you can achieve exactly the same results using software from other manufacturers.
What seems sufficient to you may not be sufficient for OCR.
Users don't always go into the details of algorithms, so it's simpler not to compress at all - if file size is an issue, compress the file, for example, using 7z.

 

[MiTasol]

I always OCR files before optimising them so that is not a factor for me. The quality of photographs and diagrams is very important to me.

And yes, the quality of the optimisation/compression is not dependent on the developer. I still use Acrobat 9 Pro which does a far better job than later Acrobat versions. It is not uncommon on pure text documents to get around 90% smaller file sizes. This is why I suggest doing a test run with any on line compression tool. I do not use any but I would expect that some are good, some are woeful.

 

[bf109xxl]

I always OCR files before optimising them so that is not a factor for me. The quality of photographs and diagrams is very important to me.

We're talking about users who are unlikely to use OCR - otherwise, these questions simply wouldn't arise. Explaining why lossless compression should be used and where in the program to select the algorithm is more complicated and less reliable than simply leaving the scanned images uncompressed.

 

[Marcel]

We're talking about users who are unlikely to use OCR - otherwise, these questions simply wouldn't arise. Explaining why lossless compression should be used and where in the program to select the algorithm is more complicated and less reliable than simply leaving the scanned images uncompressed.

Which is why I helped people compressing pdfs