I've been working with a company for a couple of years now;
Things are generally okay, but I'm starting to contemplate looking for a change or an improvement somewhere... Either a higher salary, significantly more PTO, more work-from-home, etc. Something to make it more 'worth it' for me. I don't necessarily explicitly want to leave, but I find I'm generally just not excited about my job anymore and I feel it would be pretty easy for someone to poach me with the right offer.
I recently updated my resume, and at the end of it, I was feeling very, very confident about myself. Greatest resume to ever walk the earth, exponentially better than the one that I originally applied with a few years ago.
I started to think, If I were to ask for a raise, my manager might just consider the work that I've done here at this company and their personal experiences with me when responding to it... (Which is definitely okay, I've done a good job, I just haven't worked with this manager very long)
However if my manager were to see/look at my resume when responding to that request, I feel it would likely drive home a bit of fear that "Oh..... This person is prepared and will very likely get hired somewhere else at the amount they're asking... It will be a monumental effort for us to replace them if they leave, which from the looks of it they could easily do if we don't give them this...."
My question is, is this a normal thing to do when asking for a raise?
I feel like it would be a useful tool, but I feel as though it would also worry them that I'd been looking for other offers or preparing to leave.
If I've gone this far, should I just get an offer or two first anyway?
I'm likely on the higher end of the pay scale for my position already, but I have leverage in that if I were to leave, it would likely take months to fill the position with a new replacement; there's only one of me and I develop/maintain an application that ~500 users rely on each day at our organization; Likely much longer to find someone at the same level of experience (niche market), and even then they would have a very long time (1 year+) to spin up / get acquainted with the system, why things are built the way they are, etc
Edit: This is not a duplicate of the other question on how to go about asking for a raise, because this question is specifically asking, would it be appropriate or confrontational to show/use an updated resume as a negotiating tool when actually asking for the raise. This isn't something that's mentioned or addressed in the suggested duplicate question or its answers.